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	2022-12-08: How Are Quasiparticles Different From Particles? 04:44: In a sense that’s right - quasiparticles are emergent from the behavior of a particular configuration of matter. 13:28: ... lattice, or skyrmions, which are localized, stable topological field configurations sort of like knots - all very important for the emerging field of ...
	2022-11-16: Are there Undiscovered Elements Beyond The Periodic Table? 12:02: ... even numbers of protons, and for whatever complex reasons there is no configuration of neutrons that can stabilize that unhappy ...
	2022-08-03: What Happens Inside a Proton? 07:53: ... for all possible paths between   the starting and final field configuration to  get the probability of that transition ... 08:30: ... electromagnetism: there’s an astronomical   number of configurations that the field could pass through in the intervening time. No ... 10:18: ... from the starting to final configuration.  And because these configurations are messy,   we can’t do a simple integration like in  ... 10:43: ... we randomly choose a selection of  field configurations of a pixelated space   that get us from the start to  the ... 07:53: ... for all possible paths between   the starting and final field configuration to  get the probability of that transition ... 10:18: ... of ways that the field can move   from the starting to final configuration.  And because these configurations are messy,   we can’t do a ... 08:30: ... electromagnetism: there’s an astronomical   number of configurations that the field could pass through in the intervening time. No ... 10:18: ... from the starting to final configuration.  And because these configurations are messy,   we can’t do a simple integration like in  ... 10:43: ... we randomly choose a selection of  field configurations of a pixelated space   that get us from the start to  the ... 08:30: ... For QED, Feynman diagrams let   us reduce the number of field configurations by approximating them as virtual particles.   But for QCD we have ... 09:50: ... physical space we add up trajectories through the space of field configurations.   And that is much harder to do, for three reasons. First, any patch ...
	2022-07-27: How Many States Of Matter Are There? 08:26: These are configurations of entangled particles that oscillate between states even when they have no energy.
	2022-01-19: How To Build The Universe in a Computer 02:33: Then, from that new configuration he’d start the process again.
	2022-01-12: How To Simulate The Universe With DFT 06:29: Well, these systems do sort of exist in a many-dimensional space called configuration space. 06:37: ... for the classical case we can throw away most of configuration space and consider just the few points in that space where the particles ... 06:48: In quantum mechanics, we’re dealing with the wavefunction, and the wavefunction fills all of configuration space. 08:02: But if we want to keep the quantum behaviour of quantum mechanics we can’t throw away most of configuration space like we do in Newtonian mechanics. 18:04: Energy becomes useful when it’s moved between a low entropy to a high entropy configuration. 06:29: Well, these systems do sort of exist in a many-dimensional space called configuration space. 06:37: ... for the classical case we can throw away most of configuration space and consider just the few points in that space where the particles ... 06:48: In quantum mechanics, we’re dealing with the wavefunction, and the wavefunction fills all of configuration space. 08:02: But if we want to keep the quantum behaviour of quantum mechanics we can’t throw away most of configuration space like we do in Newtonian mechanics.
	2021-12-10: 2021 End of Year AMA! 00:02: ... a separate project to for other reasons study different casimir plate configurations and um and in the process they found a some kind of energy ...
	2021-11-17: Are Black Holes Actually Fuzzballs? 01:48: Black holes should have an enormous number of so-called microstates - hidden configurations - and this translates to an enormous entropy. 06:37: ... a way to count the microstates on the horizon- the number of possible configurations of stringy structures - the 1-D strings themselves and ... 01:48: Black holes should have an enormous number of so-called microstates - hidden configurations - and this translates to an enormous entropy. 06:37: ... a way to count the microstates on the horizon- the number of possible configurations of stringy structures - the 1-D strings themselves and ... 01:48: Black holes should have an enormous number of so-called microstates - hidden configurations - and this translates to an enormous entropy.
	2021-11-10: What If Our Understanding of Gravity Is Wrong? 15:45: ... Smith asks, if the configuration   space Lagrangian seems to bridge  quantum mechanics and relativity, ...
	2021-11-02: Is ACTION The Most Fundamental Property in Physics? 11:59: ... shortest path through space, the shortest path through something called configuration ... 12:16: ... this “configuration space” is what ties all of this together. Configuration space is the ... 13:23: ... which allows us to track the evolution of all quantum fields through configuration space, and so predict the behavior of all known ... 13:46: ... and Lagrange and Dirac and Feynman, each seeking a path through the configuration space of ideas, guided by mysterious principles, not least of which is ... 11:59: ... shortest path through space, the shortest path through something called configuration space. ... 12:16: ... this “configuration space” is what ties all of this together. Configuration space is the space of ... 13:23: ... which allows us to track the evolution of all quantum fields through configuration space, and so predict the behavior of all known ... 13:46: ... and Lagrange and Dirac and Feynman, each seeking a path through the configuration space of ideas, guided by mysterious principles, not least of which is the ... 12:16: ... trajectories given our object’s constraints. In the case of the ball, configuration space refers to all the places the ball could reach with its current Potential and ...
	2021-10-13: New Results in Quantum Tunneling vs. The Speed of Light 14:19: ... questions and lots of questions. MrRolnichek asks about the hedgehogs configurations - the radiating knots in the Higgs field that might lead to magnetic ...
	2021-10-05: Why Magnetic Monopoles SHOULD Exist 10:34: ... arrows all point away from that point - in what was called a hedgehog configuration. ...
	2021-09-21: How Electron Spin Makes Matter Possible 05:33: ... objects that require a 720 degree rotation to return to their original configuration in terms of their relationship to other ...
	2021-08-18: How Vacuum Decay Would Destroy The Universe 00:21: ... to galaxies - would be possible. In fact,   for most possible configurations of the quantum fields, no structures would exist at ...
	2021-08-10: How to Communicate Across the Quantum Multiverse 00:53: ... or the dishwasher, or the wind, birds, traffic. Each sound is its own configuration of overlapping sinusoidal waves. All these waves overlap to produce a ...
	2021-07-21: How Magnetism Shapes The Universe 08:51: Large-scale magnetic fields can grow and reinforce themselves in very particular configurations called dynamos. 15:47: If you mean every possible configuration of particle properties in the universe - then the answer is there are infinite worlds. 08:51: Large-scale magnetic fields can grow and reinforce themselves in very particular configurations called dynamos.
	2021-06-23: How Quantum Entanglement Creates Entropy 02:48: ... properties. For example, there are   more configurations of particles in which energy is perfectly mixed than if energy is ...
	2020-11-11: Can Free Will be Saved in a Deterministic Universe? 03:34: ... brains, both as the crude matter that forms the brain and the ephemeral configuration of neural connections, synaptic strengths, and electrochemical dynamics ...
	2020-10-20: Is The Future Predetermined By Quantum Mechanics? 14:59: ... need to be the instantaneous state of the brain, the momentary spatial configuration of its particles at that instant that gives rise to our conscious ...
	2020-09-21: Could Life Evolve Inside Stars? 05:52: There’s only one possible configuration, and so there’s no way to store information that way.
	2020-03-03: Does Quantum Immortality Save Schrödinger's Cat? 12:03: ... Goswami points out that the different matter configurations between experimental aparatus and the brain of different observers means ...
	2020-02-24: How Decoherence Splits The Quantum Multiverse 11:41: ... but by now each of those wavefunction branches corresponds to a specific configuration of matter and information - in the computer and in your ... 11:57: ... that particular brain configuration will result in the conscious awareness consistent with that one branch ...
	2020-02-11: Are Axions Dark Matter? 05:16: ... energy of the vacuum, and the universe always seeks the lowest energy configuration. ... 12:47: ... right. He then compares that to an estimate of the number of possible configurations of particles in the universe - 10^90 factorial. Now, I assume Ethan got ... 15:20: ... a greater universe that is itself large enough to fit all possible configurations of observable universe sized regions. The volume would want to be ... 12:47: ... right. He then compares that to an estimate of the number of possible configurations of particles in the universe - 10^90 factorial. Now, I assume Ethan got ... 15:20: ... a greater universe that is itself large enough to fit all possible configurations of observable universe sized regions. The volume would want to be ...
	2020-02-03: Are there Infinite Versions of You? 05:24: If there are infinite possible starting configurations for any one region of the universe, then there can be infinite regions without any doubling up. 05:32: But if there are finite starting points then at least SOME of those starting configurations have to be repeated infinite times. 07:01: It seems there must be finite possible starting configurations. 08:40: For example, you could argue that fundamental quantum randomness will cause even identical starting configurations to produce different results. 08:48: ... number of distinguishable histories because the number of possible configurations of particles at every instant is still ... 09:07: There’s actually a much simpler proof that there’s a finite number of different possible configurations of any region of the universe. 09:33: And 2 to the power of which is the number of different possible configurations for that volume. 09:40: For our 46-billion light year observable universe there are definitely no more than 2^10^123 possible unique configurations. 10:02: And actually, the Bekenstein bound is the hard upper limit - for non-black holes the number of possible configurations is much, much lower. 13:31: So to remind you - Euler and Lagrange came up with a set of 3-body configurations that are now known as the Lagrange points. 05:24: If there are infinite possible starting configurations for any one region of the universe, then there can be infinite regions without any doubling up. 05:32: But if there are finite starting points then at least SOME of those starting configurations have to be repeated infinite times. 07:01: It seems there must be finite possible starting configurations. 08:40: For example, you could argue that fundamental quantum randomness will cause even identical starting configurations to produce different results. 08:48: ... number of distinguishable histories because the number of possible configurations of particles at every instant is still ... 09:07: There’s actually a much simpler proof that there’s a finite number of different possible configurations of any region of the universe. 09:33: And 2 to the power of which is the number of different possible configurations for that volume. 09:40: For our 46-billion light year observable universe there are definitely no more than 2^10^123 possible unique configurations. 10:02: And actually, the Bekenstein bound is the hard upper limit - for non-black holes the number of possible configurations is much, much lower. 13:31: So to remind you - Euler and Lagrange came up with a set of 3-body configurations that are now known as the Lagrange points.
	2020-01-20: Solving the Three Body Problem 03:18: ... of the three-body problem is that the evolution of almost all starting configurations is dominated by chaotic dynamics. Future states are highly dependent on ... 07:56: ... - they evolve - sometimes in complex ways - back to their starting configuration. In the 70s, Michel Henon and Roger Broucke found a family of solutions ... 10:30: ... Such a pseudo-random system will, over time, explore all possible configurations consistent with some basic properties like the energy and angular ... 03:18: ... of the three-body problem is that the evolution of almost all starting configurations is dominated by chaotic dynamics. Future states are highly dependent on ... 10:30: ... Such a pseudo-random system will, over time, explore all possible configurations consistent with some basic properties like the energy and angular ...
	2019-12-17: Do Black Holes Create New Universes? 04:27: Perhaps the configuration of the geometry string theory’s extra dimensions gets shifted - this would do the job. 13:40: Please email us with the configuration of fundamental constants you’d prefer and we’ll get it right out to you.
	2019-12-02: Is The Universe Finite? 15:40: ... do we define a typical universe? Well it would be one whose particular configuration of fundamental constants gives you a universe similar in some respect to ...
	2019-11-11: Does Life Need a Multiverse to Exist? 11:24: ... constants, including the vacuum energy, are set by the particular configuration of the extra coiled dimensions of that ... 11:39: Countless such configurations are possible, with any given universe - or perhaps every section of the same universe - having different properties. 11:54: But how to get enough universes to make sure that our extremely improbable configuration of dials becomes a sure thing? 11:39: Countless such configurations are possible, with any given universe - or perhaps every section of the same universe - having different properties.
	2019-10-21: Is Time Travel Impossible? 10:33: As long as the backwards time-traveling configuration of matter always leads to exactly to the same forward-traveling configuration.
	2019-09-30: How Many Universes Are There? 07:27: ... to pin down because there are countless possible minimum-energy configurations of its 6 curled up ... 07:46: The vast space of possible configurations of these compact dimensions is referred to as the string landscape. 07:54: Each different configuration results in a different family of particles and also a different cosmological constant. 07:27: ... to pin down because there are countless possible minimum-energy configurations of its 6 curled up ... 07:46: The vast space of possible configurations of these compact dimensions is referred to as the string landscape.
	2019-05-09: Why Quantum Computing Requires Quantum Cryptography 01:04: The logic gates of a quantum computer exist in a state of quantum superposition of many simultaneous configurations.
	2019-05-01: The Real Science of the EHT Black Hole 09:32: With that constraint they could find the configuration that fit the actual image.
	2019-04-10: The Holographic Universe Explained 11:58: ... higher dimensional space – like in black holes – look like a solvable configuration of particles in the low-D ...
	2019-01-16: Our Antimatter, Mirrored, Time-Reversed Universe 10:54: ... universe evolves forward in time it should end up back in its starting configuration. On the other hand broken T symmetry says that if you do this reversal ...
	2018-10-18: What are the Strings in String Theory? 12:19: In fact, the single free parameter in string theory becomes the configuration of the extra dimensions.
	2018-09-05: The Black Hole Entropy Enigma 03:55: The higher the entropy, the more randomly distributed its particles and the more possible configurations lead to the same macroscopic state. 07:50: So entropy can be defined as the information hidden in a system's macroscopic configuration times the Boltzmann constant. 03:55: The higher the entropy, the more randomly distributed its particles and the more possible configurations lead to the same macroscopic state.
	2018-08-30: Is There Life on Mars? 03:57: That's the configuration that also just passed recently.
	2018-07-25: Reversing Entropy with Maxwell's Demon 01:31: ... defined by the number of possible configurations of particles-- or microstates in physics-speak-- that could produce the ... 02:52: There are only a few configurations that look like this, which means knowing the macrostate almost tells you the exact microstate. 03:27: OK, so that was one weird Go configuration. 03:51: In fact, this configuration isn't low entropy in the thermodynamic sense. 04:26: ... weird configurations like these, where average thermodynamic properties are the same ... 04:43: ... actually, it turns out that even these specific high entropy configurations can be transformed to low entropy, as long as we have information about ... 03:51: In fact, this configuration isn't low entropy in the thermodynamic sense. 01:31: ... defined by the number of possible configurations of particles-- or microstates in physics-speak-- that could produce the ... 02:52: There are only a few configurations that look like this, which means knowing the macrostate almost tells you the exact microstate. 04:26: ... weird configurations like these, where average thermodynamic properties are the same ... 04:43: ... actually, it turns out that even these specific high entropy configurations can be transformed to low entropy, as long as we have information about ...
	2018-07-18: The Misunderstood Nature of Entropy 04:11: For a given set of large-scale observable properties, every possible configuration of particles that could give those properties is equally likely. 04:22: By configuration, I mean the exact arrangement, of positions, velocities, et cetera of all microscopic particles.
	2018-05-23: Why Quantum Information is Never Destroyed 02:50: That would mean that the exact configuration of the universe at any point in time defines the exact configuration at any other point. 02:57: ... thing, this time-reversal symmetry means complete information about the configuration at all prior times still exists and always will, even if we can't ... 03:30: For example, what if many different configurations of particles in the present could converge on a single configuration of particles in the future?
	2018-04-11: The Physics of Life (ft. It's Okay to be Smart & PBS Eons!) 01:35: They're highly specific configurations that almost never happen by chance.
	2017-11-08: Zero-Point Energy Demystified 02:52: The combined volume of the inside and outside of the piston chamber is in a low-entropy configuration. 02:59: It's a special unusual configuration of particles.
	2017-09-28: Are the Fundamental Constants Changing? 05:48: There are two stable configurations for this interaction-- the little bar magnet may be aligned with the orbital field, or opposite to it.
	2017-05-03: Are We Living in an Ancestor Simulation? ft. Neil deGrasse Tyson 14:58: Particles can start out in a high density configuration, say, in the corner of a room, and then expand. 15:06: ... their velocities, then they would all end up back in their original configuration. ...
	2017-04-05: Telescopes on the Moon 08:09: The whole liquid mirror configuration would weigh a few tons and could possibly launch in an Aries 5 Mission in the 2020s.
	2017-03-15: Time Crystals! 11:07: ... instability would have preceded the system, finding this nice resonant configuration, and that probably drove the planets from much larger orbits to their ...
	2016-12-08: What Happens at the Event Horizon? 17:42: ... the [INAUDIBLE] wave is a physical reality, even the [INAUDIBLE] wave in configuration ...
	2016-07-06: Juno to Reveal Jupiter's Violent Past 04:29: Astrophysicists have run many computer simulations to find formation scenarios that lead to the configuration of planets that we see today.
	2016-06-22: Planck's Constant and The Origin of Quantum Mechanics 13:22: ... it's true that for a given lens, there could be a range of different configurations of matter that produce the same distribution of light seen in the lens, ...
	2016-06-15: The Strange Universe of Gravitational Lensing 04:09: ... in that parameter space is a configuration of lens and light source that will collapse those distorted images into ... 04:19: Find that configuration, and we've mapped the gravitational field, the distribution of mass of the lens.
	2016-01-27: The Origin of Matter and Time 06:56: In those particles, and in the configuration of the ensemble-- the object itself-- the internal machinery of the thing evolves.
	2015-05-27: Habitable Exoplanets Debunked! 08:41: ... there's a configuration in which something has less total potential energy than it did before, ...
	2015-05-20: The Real Meaning of E=mc² 08:35: ... second configuration has more gravitational potential energy than the first because the ...

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