- published: 14 Mar 2020
- views: 262718
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Quintessence Editions
Quintessence Editions Ltd. is a publishing company based in London (UK) which is the originator of the "1001 Before You Die" series. Typically, the titles in this series are intended as reference books. They are illustrated books authored by multiple contributors. Quintessence is part of the Quarto Group.
Titles in the series
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Quintessence_Editions
Quintessence
Quintessence may refer to:
Science
Music
Books
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Quintessence
Quintessence (physics)
In physics, quintessence is a hypothetical form of dark energy, more precisely a scalar field, postulated as an explanation of the observation of an accelerating rate of expansion of the universe, rather than due to a true cosmological constant. The first example of this scenario was proposed by Ratra and Peebles (1988). The concept was expanded to more general types of time-varying dark energy and the term "quintessence" was first introduced in a paper by R.R.Caldwell, Rahul Dave and Paul Steinhardt. It has been proposed by some physicists to be a fifth fundamental force. Quintessence differs from the cosmological constant explanation of dark energy in that it is dynamic, that is, it changes over time, unlike the cosmological constant which always stays constant. It is suggested that quintessence can be either attractive or repulsive depending on the ratio of its kinetic and potential energy. Specifically, it is thought that quintessence became repulsive about ten billion years ago (the universe is approximately 13.8 billion years old).
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Quintessence_(physics)
Quintessence (English band)
Quintessence was a rock band formed in April 1969 in Notting Hill, London, England. Their style was a mixture of jazz, psychedelic rock and progressive rock with an influence of music from India.
Career
The original line-up included Sambhu Babaji (bass guitar), Maha Dev (rhythm guitar), Shiva Shankar Jones (vocals, keyboards, percussion), Jake Milton (drums, percussion), Allan Mostert (lead guitar), and Raja Ram (flute, percussion).
They rehearsed in All Saints Hall which was a converted church near Portobello Road, and recorded three albums for Island Records between 1969 and 1971, with two further albums recorded in 1972 for RCA. The first of the latter set, Self, featured studio material on side one, with the band recorded playing live at Exeter University, on 11 December 1971, on side two.
They built a reputation on solid club work. Besides appearing at the first two Glastonbury Festivals (then called 'Fayres'), in 1970/71, they also were invited to play the Montreux Jazz Festival.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Quintessence_(English_band)
Podcasts:
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What is Dark Energy made of? Quintessence? cosmological constant?
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech It’s one of the biggest mysteries in science. It makes up the majority of the universe. What is dark energy? What is dark energy made of? What is quintessence? Is Dark energy the cosmological constant? Does dark energy really exist? Most scientists believed the expansion rate had to be slowing down over t...
published: 14 Mar 2020 -
Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start your free trial TODAY so you can watch "The Mystery of Dark Matter" about how Dark Matter appears to be everywhere, and what it could be: https://www.magellantv.com/video/the-mystery-of-dark-matter Also enjoy the rest of MagellanTV’s science collection. REFERENCES: What are fields? https://www.youtube.com/watch?v=jlEovwE1oHI What is a particle? https://www.youtube.com/watch?v=UoLglpqmOr0 Higgs mechanism: https://youtu.be/yzqLHiA0uFI Dynamical DM: https://arxiv.org/abs/2104.01930 Constant energy density of DM: https://arxiv.org/abs/2106.09581 Critique of holographic DM: https://arxiv.org/abs/2102.09816 CHAPTERS: 0:00 - What's the difference between dark energy and dark matter? 1:35 - Great documen...
published: 01 Oct 2022 -
What If Dark Energy is a New Quantum Field?
PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes against the inward-pulling effect of gravity. And it’s winning - it looks like the universe will expand forever, at an ever-increasing rate. We call this mysterious influence dark energy, but while we’ve talked a lot about how it behaves, we’ve never really explored what it is. So, what is dark energy, really? One strong possibility is quintessence...
published: 17 Aug 2022 -
Quintessence for the Steep Potential | Center Manifold Theorem in Cosmology
✍️ About: In this video, we have presented a review of the Quintessence field minimally coupled with Dark matter in the context of the Dynamical System Analysis. For the Quintessence Field, we have considered the potential to be an exponential type having different steeper constants. The study gives both accelerating and non-accelerating critical points for which the Eigenvalues become non-hyperbolic. 🤯The non-hyperbolic term used for the case where any real part of the eigenvalues of the Jacobian Matrix is zero and the rest have either positive or negative values. In that case, the stability of the critical points can not be determined by using the standard Linearization Technique. Hence, I have discussed the "Center Manifold Theorem" to discuss stability. I have not given a greater dept...
published: 05 Nov 2022 -
Dark Energy and the Vacuum Catastrophe
In this video I would like to discuss one of the great unsolved problems in fundamental physics, the famous vacuum energy catastrophe (also known as the cosmological constant problem). What makes the problem so fascinating is that it weaves together two of the most successful theories of the 21st century, quantum field theory and general relativity, and demonstrates that something has gone catastrophically wrong in our attempt to understand the origin of our expanding universe. The reason that we know something has gone horribly wrong is because our most successful theory of physics predicts that the universe should be doubling in size every millionth of a trillionth of a trillionth of a trillionth of a second! But this is clearly not happening. In fact, our best experimental observation...
published: 22 Mar 2021 -
How Does Light Actually Work?
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% off and three extra months for free! -------------------------------- If you like this video, check out writer Geraint Lewis´ excellent book, co-written with Chris Ferrie: Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos https://www.amazon.com/Where-Universe-Other-Cosmic-Questions/dp/1728238811 AND check out his YouTube channel: https://www.youtube.com/c/AlasLewisAndBarnes Incredible thumbnail art by Ettore Mazza, the GOAT: https://www.instagram.com/ettore.mazza/?hl=en Animations by the superb Jero Squartini https://www.fiverr.com/share/0v7Kjv using Manim - MIT License, (c) 2020-2023 3Blue1Brown LLC Music from Silver Maple, Epidemic Sound ...
published: 24 Feb 2023 -
Quintessence (physics)
If you find our videos helpful you can support us by buying something from amazon. https://www.amazon.com/?tag=wiki-audio-20 Quintessence (physics) In physics, quintessence is a hypothetical form of dark energy, more precisely a scalar field, postulated as an explanation of the observation of an accelerating rate of expansion of the universe, rather than due to a true cosmological constant.The first example of this scenario was proposed by Ratra and Peebles (1988). -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=uL3-8_jbwDU
published: 22 Jan 2016 -
Universe Could Stop Expanding and Collapse If Quintessence Exists as Dark Energy
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath Hello and welcome! My name is Anton and in this video, we will talk about an interesting paper discussing the potential future of the universe and how it may even stop expanding Links: https://en.wikipedia.org/wiki/Expansion_of_the_universe https://en.wikipedia.org/wiki/Accelerating_expansion_of_the_universe https://en.wikipedia.org/wiki/Quintessence_(physics) https://www.pnas.org/doi/full/10.1073/pnas.2200539119 https://youtu.be/IOm760s-8NQ https://youtu.be/UrW9Nq0MZmQ https://youtu.be/p2uWv02-BlA Support this channel on Patreon to help me make this a full time job: h...
published: 09 May 2022 -
The Dark Energy Mystery [4K]
In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collapse. But instead, they found that the universe's expansion appears to be accelerating- having expanded more in the latter half of its life. Both teams agreed upon the existence of a new type of energy field, known as Dark Energy, to drive this acceleration, and in doing so, they revived one of Einstein's long-rebuked ideas- the Cosmological Constant. Thank you to SpaceWave - Cosmic Relaxation for yet another amazing soundtrack! If you liked this video's music, check it out below: Dark Energy Soundtrack: https://www.youtube.com/channel/UCj3460Ylt4JEcEiW6PxCH9Q SpaceWave's Channel: https://youtu.be/XntDsSR38qU Thumbnail made by Wimpt...
published: 23 Sep 2022 -
What is Quintessence? Quintessence Lecture Series
Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model. What is Dark Matter and Dark Energy? This is the current unsolved problem in Physics. What are these and how to detect Dark Matter and Dark Energy? We have also talked about the different phases of the Universe in great detail. How theoretical physicist do research in Dark Matter and Dark energy? #DarkEnergy #darkMatter #Quintessence #Cosmology #alternate_dark_energy #Gravity_theory #Dynamics_of_dark_energy #copeland #edmund_copeland #M_sami
published: 20 May 2022
developed with YouTube
16:09
What is Dark Energy made of? Quintessence? cosmological constant?
- Order: Reorder
- Duration: 16:09
- Uploaded Date: 14 Mar 2020
- views: 262718
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the lar...
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
It’s one of the biggest mysteries in science. It makes up the majority of the universe. What is dark energy? What is dark energy made of? What is quintessence? Is Dark energy the cosmological constant? Does dark energy really exist?
Most scientists believed the expansion rate had to be slowing down over time, because of gravity pulling matter together. Some kind of measurement technique was needed to establish a standard luminosity. This is called a standard candle.
Two groups of astronomers (Saul Perlmutter and Adam Riess, and Brian Schmidt) , came up with a way to measure the true distances and redshifts of very distant galaxies by trying to find recent Supernova explosions – called type 1A supernovae. These provide a standard candle because all type 1A Supernovae explode with about the same luminosity. And by measuring the red shift of the light, they could determine how much space had expanded, What they found was the universe was speeding up.
The energy fueling the accelerating expansion of the universe is called “dark energy.”
So what could be causing it?
First, this energy could a property of space itself - the cosmological constant. Lambda can be thought of as the energy density of the vacuum of space. It comes from a non-perfect cancellation of quantum fluctuations.
According to Heisenberg’s uncertainty principle, quantum fields from which all particles come from cannot sit still. Particles are coming in and out of existence causing fluctuations or pressure in the vacuum. But when you use the knows equations of quantum mechanics, the theoretical energy is almost 120 orders of magnitude higher than what is actually measured.
Another mechanism is called Quintessence. This is an energy field the pervades the entire universe. And it is repulsive. It would be a dynamical dark energy. It can change from place to place, and in time. Quintessence, if true, can be measured, because the differences in dark energy in different parts of space would be measurable.
There is a fine tuning problem though, which is called the coincidence scandal. The two densities are almost the same but in the past they were different. Why do we happen to live in a moment where the difference is only about 2.3?
If we believe the dark energy model explained by vacuum fluctuations, then there is something very special about now. And it is a huge coincidence. But if you believe quintessence is true, then this is not a coincidence.
The excitations of the quintessence field would manifest itself as a particle, probably a boson, but unlike every other boson, it would have negative energy. This would mean that lighter particles could decay into heavier particles by emitting quintessence particles with negative energy. This has never been seen. The models that fit the current data indicate that dark energy is not dynamical, but stays constant.
Could dark energy be photons or radiation? No because the energy density of radiation and photons changes as space expands. Dark energy however stays the same. Why is it that if the density doesn’t go down, it makes the universe accelerate?
Because what it means is that every cubic centimeter of space is expanding at a constant rate. So over very large distances, the cumulative effect is an acceleration of the universe.
#darkenergy
#quintessence
But if more energy is being created, doesn’t this violate energy conservation? No because the positive energy is perfectly balanced by an increase in negative gravitational energy of the universe.
The third possibility is that maybe we are wrong about dark energy, and maybe it doesn’t exist at all. Subir Sarkar, Theoretical physicist at the University of Oxford in the UK believes it does not exist because the data is not good. Dr. Sakar is in the minority on his views.
Part of the reason cosmologists readily accepted this data back in 1998 is because the Supernova data indicated that the amount of dark energy needed to make the universe accelerate is 70% of the critical density, the mystery of the missing 70% energy was solved.
The 1998 supernova data is not the only data that provides evidence of dark energy. the 2000 CMB experiments and the sloan digital sky survey in 2003 showed strong evidence that the matter density of the universe is about 30% of critical density.
Maybe the universe is not flat. Or Maybe there is something wrong with Einstein’s theory of gravity. This is possible.
https://wn.com/What_Is_Dark_Energy_Made_Of_Quintessence_Cosmological_Constant
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
It’s one of the biggest mysteries in science. It makes up the majority of the universe. What is dark energy? What is dark energy made of? What is quintessence? Is Dark energy the cosmological constant? Does dark energy really exist?
Most scientists believed the expansion rate had to be slowing down over time, because of gravity pulling matter together. Some kind of measurement technique was needed to establish a standard luminosity. This is called a standard candle.
Two groups of astronomers (Saul Perlmutter and Adam Riess, and Brian Schmidt) , came up with a way to measure the true distances and redshifts of very distant galaxies by trying to find recent Supernova explosions – called type 1A supernovae. These provide a standard candle because all type 1A Supernovae explode with about the same luminosity. And by measuring the red shift of the light, they could determine how much space had expanded, What they found was the universe was speeding up.
The energy fueling the accelerating expansion of the universe is called “dark energy.”
So what could be causing it?
First, this energy could a property of space itself - the cosmological constant. Lambda can be thought of as the energy density of the vacuum of space. It comes from a non-perfect cancellation of quantum fluctuations.
According to Heisenberg’s uncertainty principle, quantum fields from which all particles come from cannot sit still. Particles are coming in and out of existence causing fluctuations or pressure in the vacuum. But when you use the knows equations of quantum mechanics, the theoretical energy is almost 120 orders of magnitude higher than what is actually measured.
Another mechanism is called Quintessence. This is an energy field the pervades the entire universe. And it is repulsive. It would be a dynamical dark energy. It can change from place to place, and in time. Quintessence, if true, can be measured, because the differences in dark energy in different parts of space would be measurable.
There is a fine tuning problem though, which is called the coincidence scandal. The two densities are almost the same but in the past they were different. Why do we happen to live in a moment where the difference is only about 2.3?
If we believe the dark energy model explained by vacuum fluctuations, then there is something very special about now. And it is a huge coincidence. But if you believe quintessence is true, then this is not a coincidence.
The excitations of the quintessence field would manifest itself as a particle, probably a boson, but unlike every other boson, it would have negative energy. This would mean that lighter particles could decay into heavier particles by emitting quintessence particles with negative energy. This has never been seen. The models that fit the current data indicate that dark energy is not dynamical, but stays constant.
Could dark energy be photons or radiation? No because the energy density of radiation and photons changes as space expands. Dark energy however stays the same. Why is it that if the density doesn’t go down, it makes the universe accelerate?
Because what it means is that every cubic centimeter of space is expanding at a constant rate. So over very large distances, the cumulative effect is an acceleration of the universe.
#darkenergy
#quintessence
But if more energy is being created, doesn’t this violate energy conservation? No because the positive energy is perfectly balanced by an increase in negative gravitational energy of the universe.
The third possibility is that maybe we are wrong about dark energy, and maybe it doesn’t exist at all. Subir Sarkar, Theoretical physicist at the University of Oxford in the UK believes it does not exist because the data is not good. Dr. Sakar is in the minority on his views.
Part of the reason cosmologists readily accepted this data back in 1998 is because the Supernova data indicated that the amount of dark energy needed to make the universe accelerate is 70% of the critical density, the mystery of the missing 70% energy was solved.
The 1998 supernova data is not the only data that provides evidence of dark energy. the 2000 CMB experiments and the sloan digital sky survey in 2003 showed strong evidence that the matter density of the universe is about 30% of critical density.
Maybe the universe is not flat. Or Maybe there is something wrong with Einstein’s theory of gravity. This is possible.
13:04
Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
- Order: Reorder
- Duration: 13:04
- Uploaded Date: 01 Oct 2022
- views: 134219
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start your free trial TODAY so you can watch "The Mystery of Dark Matter" ab...
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start your free trial TODAY so you can watch "The Mystery of Dark Matter" about how Dark Matter appears to be everywhere, and what it could be: https://www.magellantv.com/video/the-mystery-of-dark-matter Also enjoy the rest of MagellanTV’s science collection.
REFERENCES:
What are fields? https://www.youtube.com/watch?v=jlEovwE1oHI
What is a particle? https://www.youtube.com/watch?v=UoLglpqmOr0
Higgs mechanism: https://youtu.be/yzqLHiA0uFI
Dynamical DM: https://arxiv.org/abs/2104.01930
Constant energy density of DM: https://arxiv.org/abs/2106.09581
Critique of holographic DM: https://arxiv.org/abs/2102.09816
CHAPTERS:
0:00 - What's the difference between dark energy and dark matter?
1:35 - Great documentary on MagellanTV
2:30 - Cosmological constant solution
7:24 - Dark Energy field solution (Quintessence)
8:29 - The Dark Energy Particle
9:32 - Why haven't we detected the dark matter particle?
10:10 - What is dark energy connection to dark matter
11:12 - The devastating consequence of the dark energy particle
SUMMARY:
Dark energy is different than dark matter. They are both labeled dark because we don’t know what they are. Dark matter does not absorb, reflect or emit any light. It is inferred to exist only because of its gravitational effect on galaxies and galaxy clusters. It's likely matter in the form of particles.
Dark energy is powering the accelerating expansion of the universe. It appears to be the most dominant energy form in our universe - 68% of the total.
Is it possible that dark energy could also be due to some kind of particle? And could dark energy be related to the Higgs boson and dark matter?
Einstein's equation for General Relativity required the addition of a term called the cosmological constant, Lambda to balance the expansion of the universe, so that it remained static. It was thought at the time that the universe had a specific size which did not change.
But after Edwin Hubble showed that most galaxies were moving away from us, the universe had to be expanding, Einstein realized his mistake and called it his “greatest blunder.” But in an astonishing turn of events due to the discovery of the accelerating universe, it turned out that inserting lambda back into Einstein’s equation, could account for the accelerating expansion of the universe.
But what does lambda actually mean? Physically it can be thought of as the energy of empty space, also known as the vacuum energy. Quantum mechanics shows that empty space contains energy. But its value is measured and is something we have to add in by hand.
It's important to note that this value is nowhere near the theoretical prediction of what the energy of the vacuum should be, based on the ground state energy of all the quantum fields, which is about 10^120 times larger. This has been called the worst prediction in the history of physics.
#darkenergy
#cosmological
Nevertheless, the cosmological constant is the simplest solution to dark energy and works well, as long as its value constant. But is it really constant? Some of the newest and most advanced observations seem to indicate that it might not be a constant. If true, this would lead to a solution with dynamical dark energy, or a theory where dark energy changes over time and space.
In this were the case, It could be evidence in favor of viewing dark energy as a field, not as a constant of nature. This is because fields can take on different values in space and time rather than staying constant. We could then imagine dark energy as a scalar field with some potential. This is similar to how the Higgs field works. The Higgs field is also a scalar field, and it has a non zero potential.
The dark energy field is more commonly known as a quintessence field. But anytime you have a fields, you have particles. This is because excess energy in a quantum field, or excitation in the field is what we observe as particles.
So this would point to a particle solution for dark energy. These particles must then interact with matter particles of the standard model to act as a kind of an anti-gravity force.
This called the “quintessence” model of dark energy. But if it exists, why didn’t we detect it? It's effect on matter could be so weak, that we do not have sensitive enough instruments to detect it, or it could also be that such a field does not exist.
Since quintessence fields give rise to particles, such a solution may show a connection to the dark matter particle. They could both be part of a deeper grand unified theory.
An interesting consequence of a dynamical dark energy is that the repulsion could get stronger and stronger as the universe expands. The universe would have a runaway acceleration, such that it would eventually rip everything apart including all matter and all spacetime itself.
https://wn.com/Is_Dark_Energy_Made_Of_Particles_The_Quintessence_Of_Physics
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start your free trial TODAY so you can watch "The Mystery of Dark Matter" about how Dark Matter appears to be everywhere, and what it could be: https://www.magellantv.com/video/the-mystery-of-dark-matter Also enjoy the rest of MagellanTV’s science collection.
REFERENCES:
What are fields? https://www.youtube.com/watch?v=jlEovwE1oHI
What is a particle? https://www.youtube.com/watch?v=UoLglpqmOr0
Higgs mechanism: https://youtu.be/yzqLHiA0uFI
Dynamical DM: https://arxiv.org/abs/2104.01930
Constant energy density of DM: https://arxiv.org/abs/2106.09581
Critique of holographic DM: https://arxiv.org/abs/2102.09816
CHAPTERS:
0:00 - What's the difference between dark energy and dark matter?
1:35 - Great documentary on MagellanTV
2:30 - Cosmological constant solution
7:24 - Dark Energy field solution (Quintessence)
8:29 - The Dark Energy Particle
9:32 - Why haven't we detected the dark matter particle?
10:10 - What is dark energy connection to dark matter
11:12 - The devastating consequence of the dark energy particle
SUMMARY:
Dark energy is different than dark matter. They are both labeled dark because we don’t know what they are. Dark matter does not absorb, reflect or emit any light. It is inferred to exist only because of its gravitational effect on galaxies and galaxy clusters. It's likely matter in the form of particles.
Dark energy is powering the accelerating expansion of the universe. It appears to be the most dominant energy form in our universe - 68% of the total.
Is it possible that dark energy could also be due to some kind of particle? And could dark energy be related to the Higgs boson and dark matter?
Einstein's equation for General Relativity required the addition of a term called the cosmological constant, Lambda to balance the expansion of the universe, so that it remained static. It was thought at the time that the universe had a specific size which did not change.
But after Edwin Hubble showed that most galaxies were moving away from us, the universe had to be expanding, Einstein realized his mistake and called it his “greatest blunder.” But in an astonishing turn of events due to the discovery of the accelerating universe, it turned out that inserting lambda back into Einstein’s equation, could account for the accelerating expansion of the universe.
But what does lambda actually mean? Physically it can be thought of as the energy of empty space, also known as the vacuum energy. Quantum mechanics shows that empty space contains energy. But its value is measured and is something we have to add in by hand.
It's important to note that this value is nowhere near the theoretical prediction of what the energy of the vacuum should be, based on the ground state energy of all the quantum fields, which is about 10^120 times larger. This has been called the worst prediction in the history of physics.
#darkenergy
#cosmological
Nevertheless, the cosmological constant is the simplest solution to dark energy and works well, as long as its value constant. But is it really constant? Some of the newest and most advanced observations seem to indicate that it might not be a constant. If true, this would lead to a solution with dynamical dark energy, or a theory where dark energy changes over time and space.
In this were the case, It could be evidence in favor of viewing dark energy as a field, not as a constant of nature. This is because fields can take on different values in space and time rather than staying constant. We could then imagine dark energy as a scalar field with some potential. This is similar to how the Higgs field works. The Higgs field is also a scalar field, and it has a non zero potential.
The dark energy field is more commonly known as a quintessence field. But anytime you have a fields, you have particles. This is because excess energy in a quantum field, or excitation in the field is what we observe as particles.
So this would point to a particle solution for dark energy. These particles must then interact with matter particles of the standard model to act as a kind of an anti-gravity force.
This called the “quintessence” model of dark energy. But if it exists, why didn’t we detect it? It's effect on matter could be so weak, that we do not have sensitive enough instruments to detect it, or it could also be that such a field does not exist.
Since quintessence fields give rise to particles, such a solution may show a connection to the dark matter particle. They could both be part of a deeper grand unified theory.
An interesting consequence of a dynamical dark energy is that the repulsion could get stronger and stronger as the universe expands. The universe would have a runaway acceleration, such that it would eventually rip everything apart including all matter and all spacetime itself.
- published: 01 Oct 2022
- views: 134219
16:19
What If Dark Energy is a New Quantum Field?
- Order: Reorder
- Duration: 16:19
- Uploaded Date: 17 Aug 2022
- views: 935035
PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE
Sign Up on Patreon to get access to the Space ...
PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE
Sign Up on Patreon to get access to the Space Time Discord!
https://www.patreon.com/pbsspacetime
What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes against the inward-pulling effect of gravity. And it’s winning - it looks like the universe will expand forever, at an ever-increasing rate. We call this mysterious influence dark energy, but while we’ve talked a lot about how it behaves, we’ve never really explored what it is. So, what is dark energy, really?
One strong possibility is quintessence. Quintessence is a hypothetical form of dark energy, more precisely a scalar field. Watch the episode to learn more.
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https://youtube.com/playlist?list=PLsPUh22kYmNAv1_8MA9-USkY6f2lfr1hb
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https://wn.com/What_If_Dark_Energy_Is_A_New_Quantum_Field
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What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes against the inward-pulling effect of gravity. And it’s winning - it looks like the universe will expand forever, at an ever-increasing rate. We call this mysterious influence dark energy, but while we’ve talked a lot about how it behaves, we’ve never really explored what it is. So, what is dark energy, really?
One strong possibility is quintessence. Quintessence is a hypothetical form of dark energy, more precisely a scalar field. Watch the episode to learn more.
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Alexander Tamas
Morgan Hough
Amy Hickman
Juan Benet
Vinnie Falco
Fabrice Eap
Mark Rosenthal
David Nicklas
Quasar Level Supporters
Vivaan Gupta Reddy Vaka
Glenn Sugden
Sujasha Gupta Vaka, PhD.
Vikram Reddy Vaka, MD.
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Ethan Cohen
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xaexyz
Mark Heising
Hank S
Hypernova Supporters
Vyce Ailour
Brandon Paddock
Oneamazinguy
Ken S
Gregory Forfa
Kirk Honour
Mark Evans
drollere
Joe Moreira
Marc Armstrong
Scott Gorlick
Paul Stehr-Green
Russell Pope
Ben Delo
Scott Gray
Антон Кочков
John R. Slavik
Mathew
Donal Botkin
John Pollock
Edmund Fokschaner
Joseph Salomone
chuck zegar
Jordan Young
John Hofmann
Daniel Muzquiz
Gamma Ray Burst Supporters
Kane Holbrook
Bradley S. Isenbek
John Yaraee
Ross Story
teng guo
Mason Dillon
Harsh Khandhadia
Thomas Tarler
Sean McCaul
Carsten Quinlan
Susan Albee
Frank Walker
Matt Q
WhizBangery
MHL SHS
Terje Vold
Anatoliy Nagornyy
comboy
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Paul Wood
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jim bartosh
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Mr T
Andrew Mann
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Oliver Flanagan
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Nickolas Andrew Freeman
Shane Calimlim
Tybie Fitzhugh
Robert Ilardi
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Craig Stonaha
Graydon Goss
Frederic Simon
Tonyface
John Robinson
A G
David Neal
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Bradley Jenkins
Kyle Hofer
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Luaan
Cody
Thomas Dougherty
King Zeckendorff
Dan Warren
Patrick Sutton
John Griffith
Daniel Lyons
DFaulk
Kevin Warne
- published: 17 Aug 2022
- views: 935035
35:16
Quintessence for the Steep Potential | Center Manifold Theorem in Cosmology
- Order: Reorder
- Duration: 35:16
- Uploaded Date: 05 Nov 2022
- views: 137
✍️ About: In this video, we have presented a review of the Quintessence field minimally coupled with Dark matter in the context of the Dynamical System Analysis...
✍️ About: In this video, we have presented a review of the Quintessence field minimally coupled with Dark matter in the context of the Dynamical System Analysis. For the Quintessence Field, we have considered the potential to be an exponential type having different steeper constants. The study gives both accelerating and non-accelerating critical points for which the Eigenvalues become non-hyperbolic.
🤯The non-hyperbolic term used for the case where any real part of the eigenvalues of the Jacobian Matrix is zero and the rest have either positive or negative values. In that case, the stability of the critical points can not be determined by using the standard Linearization Technique. Hence, I have discussed the "Center Manifold Theorem" to discuss stability. I have not given a greater depth regarding this technique, although I present a rough idea to understand this technique.
___________________
📚 Research Articles :
My Research Papers and Other Important Research Articles:
[1] Dynamical stability of K-essence field interacting non-minimally with a perfect fluid -- https://arxiv.org/abs/2105.00361
[2] Dynamics of dark energy -- https://arxiv.org/abs/hep-th/0603057
[3] Dynamics of purely kinetic k-essence in presence of a perfect fluid -- https://arxiv.org/abs/2203.10607
[5] Dynamical Systems and Cosmology -- https://www.google.co.in/books/edition/Dynamical_Systems_and_Cosmology/0AZCcW8Au3kC?hl=en
[6] Dynamical System Analysis for Steep Potentials -- https://arxiv.org/abs/1903.02288
[7] Dynamics of purely kinetic k-essence in presence of a perfect fluid --
https://arxiv.org/abs/2203.10607
_____________________
🎥 Playlist:
Dynamics of Dark Energy REVIEW -- https://www.youtube.com/playlist?list=PLlGOh2KdpGCeH07CSUO_i3-C7cDD6qeL0
_____________________
👽 Tags :
#Quintessence #Steep_potential #Divergent_Dynamical_System #Quintessence_Dynamics
#Quintessence #center_manifold_theorem #Stability_analysis_cosmology #dark_energy #dark_matter #Physics_research #kessence #dynamical_stability #Dynamical_System_Analysis
https://wn.com/Quintessence_For_The_Steep_Potential_|_Center_Manifold_Theorem_In_Cosmology
✍️ About: In this video, we have presented a review of the Quintessence field minimally coupled with Dark matter in the context of the Dynamical System Analysis. For the Quintessence Field, we have considered the potential to be an exponential type having different steeper constants. The study gives both accelerating and non-accelerating critical points for which the Eigenvalues become non-hyperbolic.
🤯The non-hyperbolic term used for the case where any real part of the eigenvalues of the Jacobian Matrix is zero and the rest have either positive or negative values. In that case, the stability of the critical points can not be determined by using the standard Linearization Technique. Hence, I have discussed the "Center Manifold Theorem" to discuss stability. I have not given a greater depth regarding this technique, although I present a rough idea to understand this technique.
___________________
📚 Research Articles :
My Research Papers and Other Important Research Articles:
[1] Dynamical stability of K-essence field interacting non-minimally with a perfect fluid -- https://arxiv.org/abs/2105.00361
[2] Dynamics of dark energy -- https://arxiv.org/abs/hep-th/0603057
[3] Dynamics of purely kinetic k-essence in presence of a perfect fluid -- https://arxiv.org/abs/2203.10607
[5] Dynamical Systems and Cosmology -- https://www.google.co.in/books/edition/Dynamical_Systems_and_Cosmology/0AZCcW8Au3kC?hl=en
[6] Dynamical System Analysis for Steep Potentials -- https://arxiv.org/abs/1903.02288
[7] Dynamics of purely kinetic k-essence in presence of a perfect fluid --
https://arxiv.org/abs/2203.10607
_____________________
🎥 Playlist:
Dynamics of Dark Energy REVIEW -- https://www.youtube.com/playlist?list=PLlGOh2KdpGCeH07CSUO_i3-C7cDD6qeL0
_____________________
👽 Tags :
#Quintessence #Steep_potential #Divergent_Dynamical_System #Quintessence_Dynamics
#Quintessence #center_manifold_theorem #Stability_analysis_cosmology #dark_energy #dark_matter #Physics_research #kessence #dynamical_stability #Dynamical_System_Analysis
- published: 05 Nov 2022
- views: 137
49:11
Dark Energy and the Vacuum Catastrophe
- Order: Reorder
- Duration: 49:11
- Uploaded Date: 22 Mar 2021
- views: 459248
In this video I would like to discuss one of the great unsolved problems in fundamental physics, the famous vacuum energy catastrophe (also known as the cosmolo...
In this video I would like to discuss one of the great unsolved problems in fundamental physics, the famous vacuum energy catastrophe (also known as the cosmological constant problem). What makes the problem so fascinating is that it weaves together two of the most successful theories of the 21st century, quantum field theory and general relativity, and demonstrates that something has gone catastrophically wrong in our attempt to understand the origin of our expanding universe.
The reason that we know something has gone horribly wrong is because our most successful theory of physics predicts that the universe should be doubling in size every millionth of a trillionth of a trillionth of a trillionth of a second! But this is clearly not happening. In fact, our best experimental observations suggest that the universe is in fact doubling in size every ten billion years. So what has gone wrong? And why? In order to answer this question we are going to need to take a journey through some of the most exciting ideas in modern physics, from the smallest quantum fluctuations of the vacuum, to the mysterious dark energy which is driving the accelerated expansion of the universe.
References:
Introduction to Cosmology - Ian Morrison
A Universe from Nothing - Lawrence Krauss
Introduction to Cosmology - M.Pettini
Introduction to Cosmology - Matts Roos
Introduction to Cosmology - Barbara Ryden
Lecture on Vacuum Energy - Leonard Susskind YouTube (https://www.youtube.com/watch?v=GgKGPyFL-TM)
Introduction to Cosmology - University of Ohio Lecture notes (https://www.astronomy.ohio-state.edu/weinberg.21/A5682/index.html)
The picture of our universe: a view from modern cosmology - Reid, Kittell, Arsznov, Thompson (https://arxiv.org/pdf/astro-ph/0209504.pdf)
The Cosmological Constant Problem and (no) solutions to it - Wolfgang Hollick ()
The Cosmological constant problem (https://scipp.ucsc.edu/~haber/ph171/CosmoConstant15.pdf)
Estimating the vacuum energy density - Erik Margan (https://www-f9.ijs.si/~margan/Articles/vacuum_energy_density.pdf)
You can help support this channel via the Physics Explained Patreon account: https://www.patreon.com/physicsexplained
You can follow me on instagram: https://www.instagram.com/physics_explained_ig
You can follow me on Twitter: https://twitter.com/PhysicsExplain1
https://wn.com/Dark_Energy_And_The_Vacuum_Catastrophe
In this video I would like to discuss one of the great unsolved problems in fundamental physics, the famous vacuum energy catastrophe (also known as the cosmological constant problem). What makes the problem so fascinating is that it weaves together two of the most successful theories of the 21st century, quantum field theory and general relativity, and demonstrates that something has gone catastrophically wrong in our attempt to understand the origin of our expanding universe.
The reason that we know something has gone horribly wrong is because our most successful theory of physics predicts that the universe should be doubling in size every millionth of a trillionth of a trillionth of a trillionth of a second! But this is clearly not happening. In fact, our best experimental observations suggest that the universe is in fact doubling in size every ten billion years. So what has gone wrong? And why? In order to answer this question we are going to need to take a journey through some of the most exciting ideas in modern physics, from the smallest quantum fluctuations of the vacuum, to the mysterious dark energy which is driving the accelerated expansion of the universe.
References:
Introduction to Cosmology - Ian Morrison
A Universe from Nothing - Lawrence Krauss
Introduction to Cosmology - M.Pettini
Introduction to Cosmology - Matts Roos
Introduction to Cosmology - Barbara Ryden
Lecture on Vacuum Energy - Leonard Susskind YouTube (https://www.youtube.com/watch?v=GgKGPyFL-TM)
Introduction to Cosmology - University of Ohio Lecture notes (https://www.astronomy.ohio-state.edu/weinberg.21/A5682/index.html)
The picture of our universe: a view from modern cosmology - Reid, Kittell, Arsznov, Thompson (https://arxiv.org/pdf/astro-ph/0209504.pdf)
The Cosmological Constant Problem and (no) solutions to it - Wolfgang Hollick ()
The Cosmological constant problem (https://scipp.ucsc.edu/~haber/ph171/CosmoConstant15.pdf)
Estimating the vacuum energy density - Erik Margan (https://www-f9.ijs.si/~margan/Articles/vacuum_energy_density.pdf)
You can help support this channel via the Physics Explained Patreon account: https://www.patreon.com/physicsexplained
You can follow me on instagram: https://www.instagram.com/physics_explained_ig
You can follow me on Twitter: https://twitter.com/PhysicsExplain1
- published: 22 Mar 2021
- views: 459248
54:58
How Does Light Actually Work?
- Order: Reorder
- Duration: 54:58
- Uploaded Date: 24 Feb 2023
- views: 3371035
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% off and three extra months for free!
--------------------------------
...
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% off and three extra months for free!
--------------------------------
If you like this video, check out writer Geraint Lewis´ excellent book, co-written with Chris Ferrie:
Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos
https://www.amazon.com/Where-Universe-Other-Cosmic-Questions/dp/1728238811
AND check out his YouTube channel:
https://www.youtube.com/c/AlasLewisAndBarnes
Incredible thumbnail art by Ettore Mazza, the GOAT: https://www.instagram.com/ettore.mazza/?hl=en
Animations by the superb Jero Squartini https://www.fiverr.com/share/0v7Kjv using Manim - MIT License, (c) 2020-2023 3Blue1Brown LLC
Music from Silver Maple, Epidemic Sound and Artlist.
Stock footage from Storyblocks and Artgrid, images of galaxies from NASA and ESO/Hubble.
World line animation By Cyp - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=283995
00:00 Introduction
05:18 What Is Light?
12:58 An Invisible World
21:11 An Impossible Particle
30:54 Both And Neither
46:52 The Life of a Photon
#quantum #relativity
https://wn.com/How_Does_Light_Actually_Work
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% off and three extra months for free!
--------------------------------
If you like this video, check out writer Geraint Lewis´ excellent book, co-written with Chris Ferrie:
Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos
https://www.amazon.com/Where-Universe-Other-Cosmic-Questions/dp/1728238811
AND check out his YouTube channel:
https://www.youtube.com/c/AlasLewisAndBarnes
Incredible thumbnail art by Ettore Mazza, the GOAT: https://www.instagram.com/ettore.mazza/?hl=en
Animations by the superb Jero Squartini https://www.fiverr.com/share/0v7Kjv using Manim - MIT License, (c) 2020-2023 3Blue1Brown LLC
Music from Silver Maple, Epidemic Sound and Artlist.
Stock footage from Storyblocks and Artgrid, images of galaxies from NASA and ESO/Hubble.
World line animation By Cyp - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=283995
00:00 Introduction
05:18 What Is Light?
12:58 An Invisible World
21:11 An Impossible Particle
30:54 Both And Neither
46:52 The Life of a Photon
#quantum #relativity
- published: 24 Feb 2023
- views: 3371035
4:17
Quintessence (physics)
- Order: Reorder
- Duration: 4:17
- Uploaded Date: 22 Jan 2016
- views: 1790
If you find our videos helpful you can support us by buying something from amazon.
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Quintessence (physics)
In physi...
If you find our videos helpful you can support us by buying something from amazon.
https://www.amazon.com/?tag=wiki-audio-20
Quintessence (physics)
In physics, quintessence is a hypothetical form of dark energy, more precisely a scalar field, postulated as an explanation of the observation of an accelerating rate of expansion of the universe, rather than due to a true cosmological constant.The first example of this scenario was proposed by Ratra and Peebles (1988).
-Video is targeted to blind users
Attribution:
Article text available under CC-BY-SA
image source in video
https://www.youtube.com/watch?v=uL3-8_jbwDU
https://wn.com/Quintessence_(Physics)
If you find our videos helpful you can support us by buying something from amazon.
https://www.amazon.com/?tag=wiki-audio-20
Quintessence (physics)
In physics, quintessence is a hypothetical form of dark energy, more precisely a scalar field, postulated as an explanation of the observation of an accelerating rate of expansion of the universe, rather than due to a true cosmological constant.The first example of this scenario was proposed by Ratra and Peebles (1988).
-Video is targeted to blind users
Attribution:
Article text available under CC-BY-SA
image source in video
https://www.youtube.com/watch?v=uL3-8_jbwDU
- published: 22 Jan 2016
- views: 1790
14:28
Universe Could Stop Expanding and Collapse If Quintessence Exists as Dark Energy
- Order: Reorder
- Duration: 14:28
- Uploaded Date: 09 May 2022
- views: 169228
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk
Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath
Alternatively, ...
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk
Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath
Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath
Hello and welcome! My name is Anton and in this video, we will talk about an interesting paper discussing the potential future of the universe and how it may even stop expanding
Links:
https://en.wikipedia.org/wiki/Expansion_of_the_universe
https://en.wikipedia.org/wiki/Accelerating_expansion_of_the_universe
https://en.wikipedia.org/wiki/Quintessence_(physics)
https://www.pnas.org/doi/full/10.1073/pnas.2200539119
https://youtu.be/IOm760s-8NQ
https://youtu.be/UrW9Nq0MZmQ
https://youtu.be/p2uWv02-BlA
Support this channel on Patreon to help me make this a full time job:
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Space Engine is available for free here: http://spaceengine.org
Enjoy and please subscribe.
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The hardware used to record these videos:
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Some of the above are affiliate links, meaning I would get a (very small) percentage of the price paid.
Thank you to all Patreon supporters of this channel
Special thanks also goes to all the wonderful supporters of the channel through YouTube Memberships.
Images/Videos:
http://nasa/WMAP%20Science%20Team%20https://en.wikipedia.org/wiki/Expansion_of_the_universe#/media/File:CMB_Timeline300_no_WMAP.jpg
ScienceApologist - https://en.wikipedia.org/wiki/Expansion_of_the_universe#/media/File:Raisinbread.gif
Licenses used:
https://creativecommons.org/licenses/by/4.0/
https://creativecommons.org/licenses/by-sa/4.0/
https://creativecommons.org/licenses/by/3.0/
https://creativecommons.org/licenses/by-sa/3.0/
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https://creativecommons.org/licenses/by-sa/2.5/
https://creativecommons.org/licenses/by/2.0/
https://creativecommons.org/licenses/by-sa/2.0/
https://wn.com/Universe_Could_Stop_Expanding_And_Collapse_If_Quintessence_Exists_As_Dark_Energy
Good telescope that I've used to learn the basics: https://amzn.to/35r1jAk
Get a Wonderful Person shirt: https://teespring.com/stores/whatdamath
Alternatively, PayPal donations can be sent here: http://paypal.me/whatdamath
Hello and welcome! My name is Anton and in this video, we will talk about an interesting paper discussing the potential future of the universe and how it may even stop expanding
Links:
https://en.wikipedia.org/wiki/Expansion_of_the_universe
https://en.wikipedia.org/wiki/Accelerating_expansion_of_the_universe
https://en.wikipedia.org/wiki/Quintessence_(physics)
https://www.pnas.org/doi/full/10.1073/pnas.2200539119
https://youtu.be/IOm760s-8NQ
https://youtu.be/UrW9Nq0MZmQ
https://youtu.be/p2uWv02-BlA
Support this channel on Patreon to help me make this a full time job:
https://www.patreon.com/whatdamath
Bitcoin/Ethereum to spare? Donate them here to help this channel grow!
bc1qnkl3nk0zt7w0xzrgur9pnkcduj7a3xxllcn7d4
or ETH: 0x60f088B10b03115405d313f964BeA93eF0Bd3DbF
Space Engine is available for free here: http://spaceengine.org
Enjoy and please subscribe.
Twitter: https://twitter.com/WhatDaMath
Facebook: https://www.facebook.com/whatdamath
Twitch: http://www.twitch.tv/whatdamath
The hardware used to record these videos:
New Camera: https://amzn.to/34DUUlv
CPU: https://amzn.to/2LZFQCJ
Video Card: https://amzn.to/2M1W26C
Motherboard: https://amzn.to/2JYGiQQ
RAM: https://amzn.to/2Mwy2t4
PSU: https://amzn.to/2LZcrIH
Case: https://amzn.to/2MwJZz4
Microphone: https://amzn.to/2t5jTv0
Mixer: https://amzn.to/2JOL0oF
Recording and Editing: https://amzn.to/2LX6uvU
Some of the above are affiliate links, meaning I would get a (very small) percentage of the price paid.
Thank you to all Patreon supporters of this channel
Special thanks also goes to all the wonderful supporters of the channel through YouTube Memberships.
Images/Videos:
http://nasa/WMAP%20Science%20Team%20https://en.wikipedia.org/wiki/Expansion_of_the_universe#/media/File:CMB_Timeline300_no_WMAP.jpg
ScienceApologist - https://en.wikipedia.org/wiki/Expansion_of_the_universe#/media/File:Raisinbread.gif
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- published: 09 May 2022
- views: 169228
41:18
The Dark Energy Mystery [4K]
- Order: Reorder
- Duration: 41:18
- Uploaded Date: 23 Sep 2022
- views: 904252
In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collaps...
In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collapse. But instead, they found that the universe's expansion appears to be accelerating- having expanded more in the latter half of its life.
Both teams agreed upon the existence of a new type of energy field, known as Dark Energy, to drive this acceleration, and in doing so, they revived one of Einstein's long-rebuked ideas- the Cosmological Constant.
Thank you to SpaceWave - Cosmic Relaxation for yet another amazing soundtrack! If you liked this video's music, check it out below:
Dark Energy Soundtrack: https://www.youtube.com/channel/UCj3460Ylt4JEcEiW6PxCH9Q
SpaceWave's Channel: https://youtu.be/XntDsSR38qU
Thumbnail made by Wimptastic: https://www.youtube.com/channel/UC693qPg44viDNpKX9XXzOkw
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Do you use these videos to sleep or for night time watching? Check out the new sleeping space playlist, a collection of my most chilled out and ambient videos.
https://youtube.com/playlist?list=PLkoaIad9k4NIlsG6g-almaZH6MzR_T5eV
FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
http://spaceengine.org/
Get SpaceEngine on Steam: https://store.steampowered.com/app/314650/SpaceEngine/
Real-life images of space and some scientific visualisations are public domain content provided by NASA and the ESA.
- NASA: https://www.nasa.gov
- ESA: https://www.esa.int
Multiple graphic sequences were provided by Vecteezy.com
Pro License Account: https://www.vecteezy.com/members/sea-media-stock
SOURCES OF INFORMATION:
Defining Dark Energy & some Theories on its Nature: https://astronomy.swin.edu.au/cosmos/d/Dark+Energy
What Do We Really Know about Dark Energy? https://arxiv.org/pdf/1103.5331.pdf
1998 Paper by High Z Supernova Search Team Invoking the Cosmological Constant: https://arxiv.org/abs/astro-ph/9805201
Have Dark Forces Been Messing with the Cosmos? https://www.nytimes.com/2019/02/25/science/cosmos-hubble-dark-energy.html
Concordance Cosmology & Lambda-CDM: https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Big_Ideas_in_Cosmology_(Coble_et_al.)/17%3A_Dark_Energy_and_the_Fate_of_the_Universe/17.04%3A_Cosmic_Concordance_and_Cosmological_Parameters
BAOs and Standard Rulers: https://arxiv.org/abs/0801.0642
Misconceptions About the Big Bang: https://web.archive.org/web/20110719235653/http://space.mit.edu/~kcooksey/teaching/AY5/MisconceptionsabouttheBigBang_ScientificAmerican.pdf
Cosmological Constant & its Problems: http://hosting.astro.cornell.edu/academics/courses/astro1109/readings/AConstantProblem.pdf
Quintessence / K-Essence: https://arxiv.org/abs/astro-ph/0006373
Phantom Energy & the Big Rip: https://arxiv.org/abs/astro-ph/0302506
CHAPTERS:
0:00 Introduction
2:27 Accelerating Expansion
5:09 Einstein's Greatest Blunder
8:26 How Space Expands
12:11 Redshift & Standard Candles
17:03 Type 1a Supernova Searching
19:25 Λ-CDM
22:08 Baryonic Acoustic Oscillations
26:27 Future Missions to Study Dark Energy
28:46 Vacuum Fluctuations
32:29 Quintessence
34:43 Phantom Energy
37:17 The Big Rip
(NON-ENGLISH VIEWERS)
To get subtitles in another language, click the [CC] button in the bottom right corner of the screen, then click the Settings (cogwheel) icon next to it, click "Subtitles / CC" and click "Auto-Translate", and select your language from there.
Cosmological Constant
https://wn.com/The_Dark_Energy_Mystery_4K
In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collapse. But instead, they found that the universe's expansion appears to be accelerating- having expanded more in the latter half of its life.
Both teams agreed upon the existence of a new type of energy field, known as Dark Energy, to drive this acceleration, and in doing so, they revived one of Einstein's long-rebuked ideas- the Cosmological Constant.
Thank you to SpaceWave - Cosmic Relaxation for yet another amazing soundtrack! If you liked this video's music, check it out below:
Dark Energy Soundtrack: https://www.youtube.com/channel/UCj3460Ylt4JEcEiW6PxCH9Q
SpaceWave's Channel: https://youtu.be/XntDsSR38qU
Thumbnail made by Wimptastic: https://www.youtube.com/channel/UC693qPg44viDNpKX9XXzOkw
You can now support this channel on Patreon: https://www.patreon.com/sea_media
Patrons get ad-free access to videos, and also early access sneak peaks, while also supporting the channel in the process!
Alternatively, you can become a channel member through YouTube: https://youtube.com/seaMedia/join
LINKS:
- Join my Discord Server: https://discord.gg/sea
- Listen to this Video: https://soundcloud.com/sea_media
- Get SEA Merchandise: https://the-sea-store.creator-spring.com
- For Business Enquiries: [email protected]
Do you use these videos to sleep or for night time watching? Check out the new sleeping space playlist, a collection of my most chilled out and ambient videos.
https://youtube.com/playlist?list=PLkoaIad9k4NIlsG6g-almaZH6MzR_T5eV
FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
http://spaceengine.org/
Get SpaceEngine on Steam: https://store.steampowered.com/app/314650/SpaceEngine/
Real-life images of space and some scientific visualisations are public domain content provided by NASA and the ESA.
- NASA: https://www.nasa.gov
- ESA: https://www.esa.int
Multiple graphic sequences were provided by Vecteezy.com
Pro License Account: https://www.vecteezy.com/members/sea-media-stock
SOURCES OF INFORMATION:
Defining Dark Energy & some Theories on its Nature: https://astronomy.swin.edu.au/cosmos/d/Dark+Energy
What Do We Really Know about Dark Energy? https://arxiv.org/pdf/1103.5331.pdf
1998 Paper by High Z Supernova Search Team Invoking the Cosmological Constant: https://arxiv.org/abs/astro-ph/9805201
Have Dark Forces Been Messing with the Cosmos? https://www.nytimes.com/2019/02/25/science/cosmos-hubble-dark-energy.html
Concordance Cosmology & Lambda-CDM: https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Big_Ideas_in_Cosmology_(Coble_et_al.)/17%3A_Dark_Energy_and_the_Fate_of_the_Universe/17.04%3A_Cosmic_Concordance_and_Cosmological_Parameters
BAOs and Standard Rulers: https://arxiv.org/abs/0801.0642
Misconceptions About the Big Bang: https://web.archive.org/web/20110719235653/http://space.mit.edu/~kcooksey/teaching/AY5/MisconceptionsabouttheBigBang_ScientificAmerican.pdf
Cosmological Constant & its Problems: http://hosting.astro.cornell.edu/academics/courses/astro1109/readings/AConstantProblem.pdf
Quintessence / K-Essence: https://arxiv.org/abs/astro-ph/0006373
Phantom Energy & the Big Rip: https://arxiv.org/abs/astro-ph/0302506
CHAPTERS:
0:00 Introduction
2:27 Accelerating Expansion
5:09 Einstein's Greatest Blunder
8:26 How Space Expands
12:11 Redshift & Standard Candles
17:03 Type 1a Supernova Searching
19:25 Λ-CDM
22:08 Baryonic Acoustic Oscillations
26:27 Future Missions to Study Dark Energy
28:46 Vacuum Fluctuations
32:29 Quintessence
34:43 Phantom Energy
37:17 The Big Rip
(NON-ENGLISH VIEWERS)
To get subtitles in another language, click the [CC] button in the bottom right corner of the screen, then click the Settings (cogwheel) icon next to it, click "Subtitles / CC" and click "Auto-Translate", and select your language from there.
Cosmological Constant
- published: 23 Sep 2022
- views: 904252
45:16
What is Quintessence? Quintessence Lecture Series
- Order: Reorder
- Duration: 45:16
- Uploaded Date: 20 May 2022
- views: 457
Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model.
What is Dark Matter and Dark Energy? This is the current unsolved problem in Phys...
Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model.
What is Dark Matter and Dark Energy? This is the current unsolved problem in Physics. What are these and how to detect Dark Matter and Dark Energy? We have also talked about the different phases of the Universe in great detail. How theoretical physicist do research in Dark Matter and Dark energy?
#DarkEnergy #darkMatter #Quintessence #Cosmology #alternate_dark_energy #Gravity_theory #Dynamics_of_dark_energy
#copeland #edmund_copeland #M_sami
https://wn.com/What_Is_Quintessence_Quintessence_Lecture_Series
Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model.
What is Dark Matter and Dark Energy? This is the current unsolved problem in Physics. What are these and how to detect Dark Matter and Dark Energy? We have also talked about the different phases of the Universe in great detail. How theoretical physicist do research in Dark Matter and Dark energy?
#DarkEnergy #darkMatter #Quintessence #Cosmology #alternate_dark_energy #Gravity_theory #Dynamics_of_dark_energy
#copeland #edmund_copeland #M_sami
- published: 20 May 2022
- views: 457
16:09
What is Dark Energy made of? Quintessence? cosmological constant?
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for ou...
published: 14 Mar 2020
What is Dark Energy made of? Quintessence? cosmological constant?
What is Dark Energy made of? Quintessence? cosmological constant?
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- published: 14 Mar 2020
- views: 262718
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
It’s one of the biggest mysteries in science. It makes up the majority of the universe. What is dark energy? What is dark energy made of? What is quintessence? Is Dark energy the cosmological constant? Does dark energy really exist?
Most scientists believed the expansion rate had to be slowing down over time, because of gravity pulling matter together. Some kind of measurement technique was needed to establish a standard luminosity. This is called a standard candle.
Two groups of astronomers (Saul Perlmutter and Adam Riess, and Brian Schmidt) , came up with a way to measure the true distances and redshifts of very distant galaxies by trying to find recent Supernova explosions – called type 1A supernovae. These provide a standard candle because all type 1A Supernovae explode with about the same luminosity. And by measuring the red shift of the light, they could determine how much space had expanded, What they found was the universe was speeding up.
The energy fueling the accelerating expansion of the universe is called “dark energy.”
So what could be causing it?
First, this energy could a property of space itself - the cosmological constant. Lambda can be thought of as the energy density of the vacuum of space. It comes from a non-perfect cancellation of quantum fluctuations.
According to Heisenberg’s uncertainty principle, quantum fields from which all particles come from cannot sit still. Particles are coming in and out of existence causing fluctuations or pressure in the vacuum. But when you use the knows equations of quantum mechanics, the theoretical energy is almost 120 orders of magnitude higher than what is actually measured.
Another mechanism is called Quintessence. This is an energy field the pervades the entire universe. And it is repulsive. It would be a dynamical dark energy. It can change from place to place, and in time. Quintessence, if true, can be measured, because the differences in dark energy in different parts of space would be measurable.
There is a fine tuning problem though, which is called the coincidence scandal. The two densities are almost the same but in the past they were different. Why do we happen to live in a moment where the difference is only about 2.3?
If we believe the dark energy model explained by vacuum fluctuations, then there is something very special about now. And it is a huge coincidence. But if you believe quintessence is true, then this is not a coincidence.
The excitations of the quintessence field would manifest itself as a particle, probably a boson, but unlike every other boson, it would have negative energy. This would mean that lighter particles could decay into heavier particles by emitting quintessence particles with negative energy. This has never been seen. The models that fit the current data indicate that dark energy is not dynamical, but stays constant.
Could dark energy be photons or radiation? No because the energy density of radiation and photons changes as space expands. Dark energy however stays the same. Why is it that if the density doesn’t go down, it makes the universe accelerate?
Because what it means is that every cubic centimeter of space is expanding at a constant rate. So over very large distances, the cumulative effect is an acceleration of the universe.
#darkenergy
#quintessence
But if more energy is being created, doesn’t this violate energy conservation? No because the positive energy is perfectly balanced by an increase in negative gravitational energy of the universe.
The third possibility is that maybe we are wrong about dark energy, and maybe it doesn’t exist at all. Subir Sarkar, Theoretical physicist at the University of Oxford in the UK believes it does not exist because the data is not good. Dr. Sakar is in the minority on his views.
Part of the reason cosmologists readily accepted this data back in 1998 is because the Supernova data indicated that the amount of dark energy needed to make the universe accelerate is 70% of the critical density, the mystery of the missing 70% energy was solved.
The 1998 supernova data is not the only data that provides evidence of dark energy. the 2000 CMB experiments and the sloan digital sky survey in 2003 showed strong evidence that the matter density of the universe is about 30% of critical density.
Maybe the universe is not flat. Or Maybe there is something wrong with Einstein’s theory of gravity. This is possible.
13:04
Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start ...
published: 01 Oct 2022
Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
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- published: 01 Oct 2022
- views: 134219
Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/arvinash . Start your free trial TODAY so you can watch "The Mystery of Dark Matter" about how Dark Matter appears to be everywhere, and what it could be: https://www.magellantv.com/video/the-mystery-of-dark-matter Also enjoy the rest of MagellanTV’s science collection.
REFERENCES:
What are fields? https://www.youtube.com/watch?v=jlEovwE1oHI
What is a particle? https://www.youtube.com/watch?v=UoLglpqmOr0
Higgs mechanism: https://youtu.be/yzqLHiA0uFI
Dynamical DM: https://arxiv.org/abs/2104.01930
Constant energy density of DM: https://arxiv.org/abs/2106.09581
Critique of holographic DM: https://arxiv.org/abs/2102.09816
CHAPTERS:
0:00 - What's the difference between dark energy and dark matter?
1:35 - Great documentary on MagellanTV
2:30 - Cosmological constant solution
7:24 - Dark Energy field solution (Quintessence)
8:29 - The Dark Energy Particle
9:32 - Why haven't we detected the dark matter particle?
10:10 - What is dark energy connection to dark matter
11:12 - The devastating consequence of the dark energy particle
SUMMARY:
Dark energy is different than dark matter. They are both labeled dark because we don’t know what they are. Dark matter does not absorb, reflect or emit any light. It is inferred to exist only because of its gravitational effect on galaxies and galaxy clusters. It's likely matter in the form of particles.
Dark energy is powering the accelerating expansion of the universe. It appears to be the most dominant energy form in our universe - 68% of the total.
Is it possible that dark energy could also be due to some kind of particle? And could dark energy be related to the Higgs boson and dark matter?
Einstein's equation for General Relativity required the addition of a term called the cosmological constant, Lambda to balance the expansion of the universe, so that it remained static. It was thought at the time that the universe had a specific size which did not change.
But after Edwin Hubble showed that most galaxies were moving away from us, the universe had to be expanding, Einstein realized his mistake and called it his “greatest blunder.” But in an astonishing turn of events due to the discovery of the accelerating universe, it turned out that inserting lambda back into Einstein’s equation, could account for the accelerating expansion of the universe.
But what does lambda actually mean? Physically it can be thought of as the energy of empty space, also known as the vacuum energy. Quantum mechanics shows that empty space contains energy. But its value is measured and is something we have to add in by hand.
It's important to note that this value is nowhere near the theoretical prediction of what the energy of the vacuum should be, based on the ground state energy of all the quantum fields, which is about 10^120 times larger. This has been called the worst prediction in the history of physics.
#darkenergy
#cosmological
Nevertheless, the cosmological constant is the simplest solution to dark energy and works well, as long as its value constant. But is it really constant? Some of the newest and most advanced observations seem to indicate that it might not be a constant. If true, this would lead to a solution with dynamical dark energy, or a theory where dark energy changes over time and space.
In this were the case, It could be evidence in favor of viewing dark energy as a field, not as a constant of nature. This is because fields can take on different values in space and time rather than staying constant. We could then imagine dark energy as a scalar field with some potential. This is similar to how the Higgs field works. The Higgs field is also a scalar field, and it has a non zero potential.
The dark energy field is more commonly known as a quintessence field. But anytime you have a fields, you have particles. This is because excess energy in a quantum field, or excitation in the field is what we observe as particles.
So this would point to a particle solution for dark energy. These particles must then interact with matter particles of the standard model to act as a kind of an anti-gravity force.
This called the “quintessence” model of dark energy. But if it exists, why didn’t we detect it? It's effect on matter could be so weak, that we do not have sensitive enough instruments to detect it, or it could also be that such a field does not exist.
Since quintessence fields give rise to particles, such a solution may show a connection to the dark matter particle. They could both be part of a deeper grand unified theory.
An interesting consequence of a dynamical dark energy is that the repulsion could get stronger and stronger as the universe expands. The universe would have a runaway acceleration, such that it would eventually rip everything apart including all matter and all spacetime itself.
16:19
What If Dark Energy is a New Quantum Field?
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published: 17 Aug 2022
What If Dark Energy is a New Quantum Field?
What If Dark Energy is a New Quantum Field?
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- published: 17 Aug 2022
- views: 935035
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What is Quintessence? Well we know that something is up with the way the universe is expanding - there’s some kind of anti-gravitational effect that’s causing the expansion to accelerate. We don’t know what it is - just that it competes against the inward-pulling effect of gravity. And it’s winning - it looks like the universe will expand forever, at an ever-increasing rate. We call this mysterious influence dark energy, but while we’ve talked a lot about how it behaves, we’ve never really explored what it is. So, what is dark energy, really?
One strong possibility is quintessence. Quintessence is a hypothetical form of dark energy, more precisely a scalar field. Watch the episode to learn more.
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35:16
Quintessence for the Steep Potential | Center Manifold Theorem in Cosmology
✍️ About: In this video, we have presented a review of the Quintessence field minimally co...
published: 05 Nov 2022
Quintessence for the Steep Potential | Center Manifold Theorem in Cosmology
Quintessence for the Steep Potential | Center Manifold Theorem in Cosmology
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- published: 05 Nov 2022
- views: 137
✍️ About: In this video, we have presented a review of the Quintessence field minimally coupled with Dark matter in the context of the Dynamical System Analysis. For the Quintessence Field, we have considered the potential to be an exponential type having different steeper constants. The study gives both accelerating and non-accelerating critical points for which the Eigenvalues become non-hyperbolic.
🤯The non-hyperbolic term used for the case where any real part of the eigenvalues of the Jacobian Matrix is zero and the rest have either positive or negative values. In that case, the stability of the critical points can not be determined by using the standard Linearization Technique. Hence, I have discussed the "Center Manifold Theorem" to discuss stability. I have not given a greater depth regarding this technique, although I present a rough idea to understand this technique.
___________________
📚 Research Articles :
My Research Papers and Other Important Research Articles:
[1] Dynamical stability of K-essence field interacting non-minimally with a perfect fluid -- https://arxiv.org/abs/2105.00361
[2] Dynamics of dark energy -- https://arxiv.org/abs/hep-th/0603057
[3] Dynamics of purely kinetic k-essence in presence of a perfect fluid -- https://arxiv.org/abs/2203.10607
[5] Dynamical Systems and Cosmology -- https://www.google.co.in/books/edition/Dynamical_Systems_and_Cosmology/0AZCcW8Au3kC?hl=en
[6] Dynamical System Analysis for Steep Potentials -- https://arxiv.org/abs/1903.02288
[7] Dynamics of purely kinetic k-essence in presence of a perfect fluid --
https://arxiv.org/abs/2203.10607
_____________________
🎥 Playlist:
Dynamics of Dark Energy REVIEW -- https://www.youtube.com/playlist?list=PLlGOh2KdpGCeH07CSUO_i3-C7cDD6qeL0
_____________________
👽 Tags :
#Quintessence #Steep_potential #Divergent_Dynamical_System #Quintessence_Dynamics
#Quintessence #center_manifold_theorem #Stability_analysis_cosmology #dark_energy #dark_matter #Physics_research #kessence #dynamical_stability #Dynamical_System_Analysis
49:11
Dark Energy and the Vacuum Catastrophe
In this video I would like to discuss one of the great unsolved problems in fundamental ph...
published: 22 Mar 2021
Dark Energy and the Vacuum Catastrophe
Dark Energy and the Vacuum Catastrophe
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- published: 22 Mar 2021
- views: 459248
In this video I would like to discuss one of the great unsolved problems in fundamental physics, the famous vacuum energy catastrophe (also known as the cosmological constant problem). What makes the problem so fascinating is that it weaves together two of the most successful theories of the 21st century, quantum field theory and general relativity, and demonstrates that something has gone catastrophically wrong in our attempt to understand the origin of our expanding universe.
The reason that we know something has gone horribly wrong is because our most successful theory of physics predicts that the universe should be doubling in size every millionth of a trillionth of a trillionth of a trillionth of a second! But this is clearly not happening. In fact, our best experimental observations suggest that the universe is in fact doubling in size every ten billion years. So what has gone wrong? And why? In order to answer this question we are going to need to take a journey through some of the most exciting ideas in modern physics, from the smallest quantum fluctuations of the vacuum, to the mysterious dark energy which is driving the accelerated expansion of the universe.
References:
Introduction to Cosmology - Ian Morrison
A Universe from Nothing - Lawrence Krauss
Introduction to Cosmology - M.Pettini
Introduction to Cosmology - Matts Roos
Introduction to Cosmology - Barbara Ryden
Lecture on Vacuum Energy - Leonard Susskind YouTube (https://www.youtube.com/watch?v=GgKGPyFL-TM)
Introduction to Cosmology - University of Ohio Lecture notes (https://www.astronomy.ohio-state.edu/weinberg.21/A5682/index.html)
The picture of our universe: a view from modern cosmology - Reid, Kittell, Arsznov, Thompson (https://arxiv.org/pdf/astro-ph/0209504.pdf)
The Cosmological Constant Problem and (no) solutions to it - Wolfgang Hollick ()
The Cosmological constant problem (https://scipp.ucsc.edu/~haber/ph171/CosmoConstant15.pdf)
Estimating the vacuum energy density - Erik Margan (https://www-f9.ijs.si/~margan/Articles/vacuum_energy_density.pdf)
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54:58
How Does Light Actually Work?
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% ...
published: 24 Feb 2023
How Does Light Actually Work?
How Does Light Actually Work?
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- published: 24 Feb 2023
- views: 3371035
Get Surfshark VPN at https://surfshark.deals/universe - Enter promo code UNIVERSE for 83% off and three extra months for free!
--------------------------------
If you like this video, check out writer Geraint Lewis´ excellent book, co-written with Chris Ferrie:
Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos
https://www.amazon.com/Where-Universe-Other-Cosmic-Questions/dp/1728238811
AND check out his YouTube channel:
https://www.youtube.com/c/AlasLewisAndBarnes
Incredible thumbnail art by Ettore Mazza, the GOAT: https://www.instagram.com/ettore.mazza/?hl=en
Animations by the superb Jero Squartini https://www.fiverr.com/share/0v7Kjv using Manim - MIT License, (c) 2020-2023 3Blue1Brown LLC
Music from Silver Maple, Epidemic Sound and Artlist.
Stock footage from Storyblocks and Artgrid, images of galaxies from NASA and ESO/Hubble.
World line animation By Cyp - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=283995
00:00 Introduction
05:18 What Is Light?
12:58 An Invisible World
21:11 An Impossible Particle
30:54 Both And Neither
46:52 The Life of a Photon
#quantum #relativity
4:17
Quintessence (physics)
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published: 22 Jan 2016
Quintessence (physics)
Quintessence (physics)
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Quintessence (physics)
In physics, quintessence is a hypothetical form of dark energy, more precisely a scalar field, postulated as an explanation of the observation of an accelerating rate of expansion of the universe, rather than due to a true cosmological constant.The first example of this scenario was proposed by Ratra and Peebles (1988).
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14:28
Universe Could Stop Expanding and Collapse If Quintessence Exists as Dark Energy
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published: 09 May 2022
Universe Could Stop Expanding and Collapse If Quintessence Exists as Dark Energy
Universe Could Stop Expanding and Collapse If Quintessence Exists as Dark Energy
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Hello and welcome! My name is Anton and in this video, we will talk about an interesting paper discussing the potential future of the universe and how it may even stop expanding
Links:
https://en.wikipedia.org/wiki/Expansion_of_the_universe
https://en.wikipedia.org/wiki/Accelerating_expansion_of_the_universe
https://en.wikipedia.org/wiki/Quintessence_(physics)
https://www.pnas.org/doi/full/10.1073/pnas.2200539119
https://youtu.be/IOm760s-8NQ
https://youtu.be/UrW9Nq0MZmQ
https://youtu.be/p2uWv02-BlA
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41:18
The Dark Energy Mystery [4K]
In 1998, two teams of scientists measured the universe's rate of expansion, expecting to f...
published: 23 Sep 2022
The Dark Energy Mystery [4K]
The Dark Energy Mystery [4K]
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In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collapse. But instead, they found that the universe's expansion appears to be accelerating- having expanded more in the latter half of its life.
Both teams agreed upon the existence of a new type of energy field, known as Dark Energy, to drive this acceleration, and in doing so, they revived one of Einstein's long-rebuked ideas- the Cosmological Constant.
Thank you to SpaceWave - Cosmic Relaxation for yet another amazing soundtrack! If you liked this video's music, check it out below:
Dark Energy Soundtrack: https://www.youtube.com/channel/UCj3460Ylt4JEcEiW6PxCH9Q
SpaceWave's Channel: https://youtu.be/XntDsSR38qU
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Do you use these videos to sleep or for night time watching? Check out the new sleeping space playlist, a collection of my most chilled out and ambient videos.
https://youtube.com/playlist?list=PLkoaIad9k4NIlsG6g-almaZH6MzR_T5eV
FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
http://spaceengine.org/
Get SpaceEngine on Steam: https://store.steampowered.com/app/314650/SpaceEngine/
Real-life images of space and some scientific visualisations are public domain content provided by NASA and the ESA.
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Multiple graphic sequences were provided by Vecteezy.com
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SOURCES OF INFORMATION:
Defining Dark Energy & some Theories on its Nature: https://astronomy.swin.edu.au/cosmos/d/Dark+Energy
What Do We Really Know about Dark Energy? https://arxiv.org/pdf/1103.5331.pdf
1998 Paper by High Z Supernova Search Team Invoking the Cosmological Constant: https://arxiv.org/abs/astro-ph/9805201
Have Dark Forces Been Messing with the Cosmos? https://www.nytimes.com/2019/02/25/science/cosmos-hubble-dark-energy.html
Concordance Cosmology & Lambda-CDM: https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Big_Ideas_in_Cosmology_(Coble_et_al.)/17%3A_Dark_Energy_and_the_Fate_of_the_Universe/17.04%3A_Cosmic_Concordance_and_Cosmological_Parameters
BAOs and Standard Rulers: https://arxiv.org/abs/0801.0642
Misconceptions About the Big Bang: https://web.archive.org/web/20110719235653/http://space.mit.edu/~kcooksey/teaching/AY5/MisconceptionsabouttheBigBang_ScientificAmerican.pdf
Cosmological Constant & its Problems: http://hosting.astro.cornell.edu/academics/courses/astro1109/readings/AConstantProblem.pdf
Quintessence / K-Essence: https://arxiv.org/abs/astro-ph/0006373
Phantom Energy & the Big Rip: https://arxiv.org/abs/astro-ph/0302506
CHAPTERS:
0:00 Introduction
2:27 Accelerating Expansion
5:09 Einstein's Greatest Blunder
8:26 How Space Expands
12:11 Redshift & Standard Candles
17:03 Type 1a Supernova Searching
19:25 Λ-CDM
22:08 Baryonic Acoustic Oscillations
26:27 Future Missions to Study Dark Energy
28:46 Vacuum Fluctuations
32:29 Quintessence
34:43 Phantom Energy
37:17 The Big Rip
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Cosmological Constant
45:16
What is Quintessence? Quintessence Lecture Series
Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model.
What is Dar...
published: 20 May 2022
What is Quintessence? Quintessence Lecture Series
What is Quintessence? Quintessence Lecture Series
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Quintessence to explain Dark Energy. An alternate theory of Lambda CDM model.
What is Dark Matter and Dark Energy? This is the current unsolved problem in Physics. What are these and how to detect Dark Matter and Dark Energy? We have also talked about the different phases of the Universe in great detail. How theoretical physicist do research in Dark Matter and Dark energy?
#DarkEnergy #darkMatter #Quintessence #Cosmology #alternate_dark_energy #Gravity_theory #Dynamics_of_dark_energy
#copeland #edmund_copeland #M_sami
Quintessence Editions
Quintessence Editions Ltd. is a publishing company based in London (UK) which is the originator of the "1001 Before You Die" series. Typically, the titles in this series are intended as reference books. They are illustrated books authored by multiple contributors. Quintessence is part of the Quarto Group.
Titles in the series
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Quintessence_Editions
What is Dark Energy made of? Quintessence? cosmolo...
Is Dark ENERGY made of PARTICLES? The Quintessence...
What If Dark Energy is a New Quantum Field?...
Quintessence for the Steep Potential | Center Mani...
Dark Energy and the Vacuum Catastrophe...
How Does Light Actually Work?...
Quintessence (physics)...
Universe Could Stop Expanding and Collapse If Quin...
The Dark Energy Mystery [4K]...
What is Quintessence? Quintessence Lecture Series...
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The Adaptations: ‘The Secret Life of Walter Mitty’
This photo negative — dubbed “negative twenty five” — is of great importance because it is being used in the last edition of “Life Magazine.” O’Connell also refers to it as “the ...
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