
20220323: Where Is The Center of The Universe?
 05:37: So could it be that there’s a higher dimensional space in which our 4D hypersphere lives?
 05:43: Could there be an equivalent of “down” in that space that we are just too dimensionallychallenged to point to?


20220112: How To Simulate The Universe With DFT
 04:52: ... adding dice to this system every time we add a particle we increase the dimensionality of the ...
 06:14: We don’t need a 3cubed or 9 dimensional equation.
 07:33: ... we can take an equation for N particles in 3D and reduce it from a 3^N dimensional equation to simply N coupled equations each in ...
 08:15: And we can’t reduce the dimensionality by treating particles separately because the Schrodinger equation can’t be made “separable”.
 08:49: ... and it’s perhaps the most successful approach to tackling the extreme dimensionality problem when solving realistic quantum ...
 13:35: ... by understanding how the universal wavefunction with its insane hyper dimensionality is connected to the narrow sliver of that wavefunction that represents ...
 14:25: Peter, the infinite dimensional universal wavefunction barely contains enough information to describe your generosity.


20210316: The NEW Crisis in Cosmology
 14:47: ... matter  or whether they're really the same type of thing  dimensionally speaking. We would also need to justify why the c in ...


20200810: Theory of Everything Controversies: Livestream
 00:00: ... where it was only about strings because they had reasons why higher dimensional objects didn't exist to brain theory it went from a finite number of ...


20200728: What is a Theory of Everything: Livestream
 00:00: ... property three again we have a math human name we made up for it the dimensionality of space the largest number of perpendicular fingers you can have in ...


20200630: Dissolving an Event Horizon
 11:46: ... in those representations take a 3dimensional space and take a two dimensional slice out of it, so the black hole or wormhole ends are circular instead ...


20200527: Does Gravity Require Extra Dimensions?
 04:20: Now we perceive the 3rd dimension, but perhaps our 3 spatial dimensions are similarly embedded in a higher dimensional space that we can’t perceive.


20200428: Space Time Livestream: Ask Matt Anything
 00:00: ... patterns of the particles that make up our bodies through this four dimensional block spacetime and so time moving forward does time with forward or ...


20190718: Did Time Start at the Big Bang?
 05:15: ... points become the same point and threedimensional space becomes zero dimensional That's the singularity We say that it didn't happen in any one place ...
 09:52: ... the SteinhardtTurok model suggests that our universe floats in a higher dimensional space living on geometric objects called brains collisions between those ...


20190424: No Dark Matter = Proof of Dark Matter?
 00:03: ... serve up down left right forward back we're actually in a higher dimensional universe of up up down down left right left right B a B a select start ...


20190410: The Holographic Universe Explained
 00:24: ... of the most startling possibilities is that our 3+1 dimensional universe may better described as resulting from a spacetime one ...
 07:47: Even from the beginning string theory had hints of this scale invariance and dimensional weirdness.
 11:46: ... interactions in the lower dimensional field theory are extremely strong – we would say the fields are strongly ...
 11:58: ... strong gravitational fields in the higher dimensional space – like in black holes – look like a solvable configuration of ...
 12:37: The lower dimensional CFT space is the surface of the AdS space because the field theory exists where the new dimension becomes infinite.
 15:10: A few of you asked whether our percieved universe is just the surface of a higher dimensional space.
 15:16: ... our percieved universe is the volume, but it can be encoded on its lower dimensional ...


20190403: The Edge of an Infinite Universe
 13:17: You can extrapolate to any number of extra dimensions – say a 3+1 dimensional  Poincare ball.
 14:40: The hologram part is because the lower dimensional space can be thought of as the infinitely distant boundary of the higher dimensional space.


20181220: Why String Theory is Wrong
 11:08: So whereas the original superstring theories were ten dimensional with six compactified, Mtheory is 11D, with seven hidden dimensions.
 11:32: Actually, the realization that superstring theory could be 11 dimensional was a revolution. It sparked the second superstring revolution.
 11:49: ... So it was incredibly exciting that string theory appeared to have an 11 dimensional version, Mtheory, to correspond to everyone's favorite 11 D super ...
 12:53: The behavior of strings in these hyper dimensional surfaces is only understood in idealized cases.


20181114: Supersymmetric Particle Found?
 14:17: To quote, "I thought one of the fundamental properties of the strings was that the maths only works if they are one dimensional.


20181107: Why String Theory is Right
 10:25: That's on the 2D dimensional world sheet of a quantum string.
 10:41: ... but only for 1D strings making a 2D world sheet, not for any other dimensional ...


20180801: How Close To The Sun Can Humanity Get?
 14:08: That their writing is one dimensional?


20170329: How Time Becomes Space Inside a Black Hole
 10:47: ... this mysterious dimensional flip does give us some fascinating insight into how time and space blend ...


20170202: The Geometry of Causality
 11:56: ... of the core of a black hole an artifact of the limitations of three dimensional mathematics?" Well, maybe, sort ...


20160921: Quantum Entanglement and the Great BohrEinstein Debate
 10:41: ... example, entangled particles may be dimensionally connected by EinsteinRosen bridges, wormholes that allows instantaneous ...


20160615: The Strange Universe of Gravitational Lensing
 01:27: ... theory of relativity describes the real universe as a flexible, dynamic dimensional grid that only resembles our mind's eye Euclidean lattice in the absence ...


20160406: We Are Star Stuff
 11:34: Space is still three dimensional, and perhaps infinite in all three dimensions.


20160316: Why is the Earth Round and the Milky Way Flat?
 02:53: And this type of dimensional egalitarianism is also shared by another effect, ultimately leading to the ball shapes of stars, planets, and moons.


20160127: The Origin of Matter and Time
 01:31: In fact, thinking in four dimensional space time, a thing is its world line.


20151209: How to Build a Black Hole
 02:51: ... think not in regular 3D space or even 4D space time but, rather, in six dimensional quantum phase ...


20151028: Is The Alcubierre Warp Drive Possible?
 05:33: ... warp field, and you hypothetically soften the fabric of space via higher dimensional effects literally, a hyper space warp ...


20150729: General Relativity & Curved Spacetime Explained!
 02:21: ... to explain if I first set up an analogy using our old friend the two dimensional ant on the surface of the ...
 08:32: ... just a lot easier to say the word gravity than say curvature of four dimensional ...


20150708: Curvature Demonstrated + Comments
 04:19: ... Shi and SamBskate were both asking how the dimensionality of the ambient space in which the surface of the sphere is embedded ...
 05:18: ... the video, the Earth it was shown was supposed to be the physical, three dimensional Earth, and we were taking a vector and moving along a circle in orbit ...
 05:27: ... you wanted to know if the three dimensional space around Earth is curved, you would follow the procedure of using ...


20150702: Can a Circle Be a Straight Line?
 03:39: From the ant's two dimensional confined perspective, curve one between A and B is straight.
 03:55: ... from the ambient three dimensional perspective, you could say that those tangent vectors aren't really ...
 04:08: ... parallel, tangent, and straight that it can apply solely within that two dimensional ...
 04:47: By the same process you can find geodesics on a saddle or a hillside or in three dimensional spaces.
 06:57: Now in a three dimensional space you can test curvature the same way we've been describing.
 07:17: So is the three dimensional space around Earth curved?
 07:24: And 3D curved space isn't what explains away gravity, it's four dimensional curved spacetime.


20150422: Are Space and Time An Illusion?
 04:25: So he proposed the following radical idea maybe reality is not a three dimensional space that evolves in time.
 04:33: Instead, it's a four dimensional nonEuclidean mathematical space that's just there.
