
20221208: 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 ...


20221116: 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 ...


20220803: 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 ...
 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 ...
 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 ...
 10:43: ... we randomly choose a selection of field configurations of a pixelated space that get us from the start to the ...


20220727: 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.


20220119: How To Build The Universe in a Computer
 02:33: Then, from that new configuration he’d start the process again.


20220112: How To Simulate The Universe With DFT
 06:29: Well, these systems do sort of exist in a manydimensional 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.


20211210: 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 ...


20211117: Are Black Holes Actually Fuzzballs?
 01:48: Black holes should have an enormous number of socalled 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 1D strings themselves and ...


20211110: What If Our Understanding of Gravity Is Wrong?
 15:45: ... Smith asks, if the configuration space Lagrangian seems to bridge quantum mechanics and relativity, ...


20211102: 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 ...


20211013: 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 ...


20211005: Why Magnetic Monopoles SHOULD Exist
 10:34: ... arrows all point away from that point  in what was called a hedgehog configuration. ...


20210921: 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 ...


20210818: 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 ...


20210810: 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 ...


20210721: How Magnetism Shapes The Universe
 08:51: Largescale 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.


20210623: How Quantum Entanglement Creates Entropy
 02:48: ... flow. Ludwig Boltzmann recast entropy in terms of the number of configurations of particles that give the same set of crude thermodynamic ...


20201111: 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 ...


20201020: 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 ...


20200921: Could Life Evolve Inside Stars?
 05:52: There’s only one possible configuration, and so there’s no way to store information that way.


20200303: 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 ...


20200224: 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 ...


20200211: 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 ...


20200203: 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 46billion 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 nonblack 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 3body configurations that are now known as the Lagrange points.


20200120: Solving the Three Body Problem
 03:18: ... of the threebody 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 pseudorandom system will, over time, explore all possible configurations consistent with some basic properties like the energy and angular ...


20191217: 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.


20191202: 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 ...


20191111: 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?


20191021: Is Time Travel Impossible?
 10:33: As long as the backwards timetraveling configuration of matter always leads to exactly to the same forwardtraveling configuration.


20190930: How Many Universes Are There?
 07:27: ... to pin down because there are countless possible minimumenergy 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.


20190509: 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.


20190501: The Real Science of the EHT Black Hole
 09:32: With that constraint they could find the configuration that fit the actual image.


20190410: The Holographic Universe Explained
 11:58: ... higher dimensional space – like in black holes – look like a solvable configuration of particles in the lowD ...


20190116: Our Antimatter, Mirrored, TimeReversed 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 ...


20181018: 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.


20180905: 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.


20180830: Is There Life on Mars?
 03:57: That's the configuration that also just passed recently.


20180725: Reversing Entropy with Maxwell's Demon
 01:31: ... defined by the number of possible configurations of particles or microstates in physicsspeak 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 ...


20180718: The Misunderstood Nature of Entropy
 04:11: For a given set of largescale 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.


20180523: 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 timereversal 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?


20180411: 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.


20171108: ZeroPoint Energy Demystified
 02:52: The combined volume of the inside and outside of the piston chamber is in a lowentropy configuration.
 02:59: It's a special unusual configuration of particles.


20170928: 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.


20170503: 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. ...


20170405: 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.


20170315: 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 ...


20161208: What Happens at the Event Horizon?
 17:42: ... the [INAUDIBLE] wave is a physical reality, even the [INAUDIBLE] wave in configuration ...


20160706: 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.


20160622: 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, ...


20160615: 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.


20160127: 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.


20150527: Habitable Exoplanets Debunked!
 08:41: ... there's a configuration in which something has less total potential energy than it did before, ...


20150520: The Real Meaning of E=mc²
 08:35: ... second configuration has more gravitational potential energy than the first because the ...
