"QM=GR?" - Leonard Susskind

www.sns.ias.edu/quantum-infor...
More videos on video.ias.edu

[@wordysmithsonism8767]

Dear Dr. Susskind, please take good care of yourself. You're one of a kind, and science needs you.

[@coastwalker101]

Always stimulating to hear Leonard Susskind talk.

[@trtr-tl8li]

I hope young people can learn from these videos. You can listen to it without going to college.

[@carlkuss]

What a teaching talent in expressing the deepest, and most advanced ideas in physics and express them in a sing-song Dr. Seuss style that is highly pedagogical and agreeable and at the same time with the security of someone who knows his stuff so very well.

[@ozzymandius666]

Finally! Experiments to check the ER=EPR hypothesis. Excellent! Great Job, Dr. Susskind.

[@Achrononmaster]

I love that idea, that quantum computers will become a laboratory for studying quantum gravity. Imagine the resources that'll save not having to build gigantic colliders.

[@J0hnC0ltrane]

Just watch a different lecture on the same topic. Same, but I hear new pieces which fill in the gaps. The Graphics are very helpful. Ty for the post.

[@carnsoaks1]

Awesome, something new from A legend of physics. Plumbing the depths of knowledge

[@CriticalPhemomenon]

It is always great to listen to Lenny!

[@craigbrownell1667]

Leonard, I used to say to my grandfather who made 93 "It's good to see you, Grandpa." He'd reply, "At my age, it's good to be seen!" Here's to many more...

[@stephengibert4722]

And it is better to be seen than viewed.

[@while.coyote]

I can't wait to play with GR on a tabletop!

[@garychap8384]

I love listening to Susskind. It is videos such as this, which prompted me to go back to university. Unfortunately, It is also videos such as this which prompted me to take Modern Languages.

[@abhinandanmehra7765]

please forward

[@wordprocessbrian4497]

thank you sir. hydrodynamic entanglement is a beautiful term .

[@HunteronX]

Classic in the making.

[@petergreen5337]

❤Thank you very much Professor and class

[@kwijung]

From Dec. 5, 2017. Thank you for uploading this!

[@maestroanth]

I love the title!

[@palfers1]

I like the idea of probing the internals of an ERB by using a pair of entangled particles, whereby one goes inside as a probe and the other remains outside as a detector. Perhaps this idea can be generalised to ensembles in order to thoroughly explore the interior - especially interiors containing that pointy GHZ entity.

[@RichardDLewis41]

Comment on Copenhagen vs Everett talk. I totally agree with the speaker that it is really important to understand the physical interpretation of quantum theory. It is no longer satisfactory to accept that “no-one understands quantum theory”, or to consider quantum theory as just a calculation tool with no physical explanation. In order to address the question of Copenhagen vs Everett we need to consider real physical experiments such as the double slit experiment. The Copenhagen interpretation tells us that the quantum wavefunction passes through the apparatus and the wave function collapses to a particle and hits the screen. The Everett (many worlds) interpretation suggests that the many possible outcomes of the experiment are all valid and the universe splits into many worlds. Now we come to an alternative explanation (The spacetime wave theory) where it is a real physical wave disturbance of spacetime which passes through both slits. We then have a wave disturbance of spacetime which arrives at the detector screen as a wave whose magnitude corresponds to the screen pattern. Now we have to think carefully about what happens at the detector. The detector is comprised of a screen and in this screen is an array of atoms and one of these atoms is going to absorb the entire incoming wave even though it is dispersed in space. So it is the active role of the detector in interacting with the incoming wave which leads to the experimental result. Exactly which atom of the detector receives the incoming wave quantum is where the probabilistic effect comes in and this is influenced by the magnitude and phase of the wave on arrival at the detector. This detection effect is non-local since the detection by one atom of the screen instantaneously prevents detection by another atom of the screen. www.academia.edu/5927513/The_Spacetime_Wave_Theory www.academia.edu/5038836/The_Unification_of_Physics Similarly when it comes to entanglement, you have to think of the entangled particles as a single system which is made up of wave quanta which are dispersed in space. Any measurement or detection instantaneously affects the whole system. Just like the dual slit experiment, the measurement of one entangled particle instantaneously affects the outcome of a measurement of the other particle. Richard

[@nicholasjoker2725]

nobody understand QM.

[@RichardDLewis41]

Time to replace it then with a theory that everyone can understand. www.academia.edu/5927513/The_Spacetime_Wave_Theory Richard

[@nicholasjoker2725]

Until we perform a conclusive experiment that tells us that such theories are false, and these others agree with the experiment ... I am on the side of those who accept that, we do not know what is really happening, but we have these theories that they have a high probability of being true!

[@ozzymandius666]

New predictions made by this hypothesis? If it doesn't have any, it doesn't even rank as a hypothesis. If it does, and none of them are experimentally proven, it doesn't rank as a theory.

[@OpenWorldRichard]

@@SeanPeckham-xe2gt If I have understood your post correctly you are making the point that simultaneous events in one frame of reference are not simultaneous in another frame of reference. This goes to the heart of the problem in understanding entanglement. If you imagine two particles A and B that have been entangled and then are separated by some distance s, then in a thought experiment we could try to make a measurement of A and B at the same time in such a way that the result of the measurement of A cannot be communicated to B before we have made the measurement of B. We would aim to achieve a time less than s/c (distance divided by speed of light). But we know that the result of the experiment must be that either A is measured first or B is measured first and regardless of how short a time has elapsed the result of the first measured particle will affect the outcome of the second measured particle. This implies that when the entangled system (which can be considered as a single spread out wave system) is measured the effect on the outcome of a measurement of the remote particle is instantaneous (i.e. occurs after a time t = 0). This is where we come to the problem with relativity because relativity tells us that simultaneous events happening with a distance of separation are not necessary simultaneous in another frame of reference. So the mechanism by which the entanglement effect occurs must happen in a particular frame of reference in the universe. Now without violating the equations of SR and GR we have to accept the physical reality that among all the possible frames of reference in the universe, there is one unique frame of reference which we know to be the CMB rest frame. This is an observational result of measuring the Cosmic Microwave Background radiation. So it is not the case that I do not understand relativity. It is the case that it is necessary to adapt the theory and principles of relativity to take account of the physical reality that there is a unique frame of reference in the universe (CMB rest frame) and it is in this frame of reference that the instantaneous effects of the collapse of an entangled system take place. Richard

[@isedairi]

Hadn't seen recent videos of Lenny for a while

[@lovesilk1]

Darn. Thought I might be able to follow along.

[@jmod1892]

To make a wormhole is 1 the output via the mass of radiational energy times the amount of distance you want to cross, for instance if wavelegth of flat blue was 10 and you wanted to travel x10 to the distance equaled then 10 of wavelength mass output needs to be x10 to mirrored distance away from the starting point so all in all you need a input of 10 to shift its equivalent weight down to the least amount of wavelegth that can be dispersed over said distance that rebounds its shift from a minus 10 back in a bounce of plus 10 back into its blue. All relevant mass and distance equality can be worked out using current systems of knowledge of the spectras and measurments. Its like saying you need to input 10 to disperse to zero where a bounce of 10 heads out the other end. Therefore the middle meeting point works like a blackhole or is a blackhole that uses quantim rotational fluctuational energy x mass mirrored redispertional entropical dispertion accelerated output to achieve this wormhole feat your looking to achieve

[@1WaySafe]

I like Alice's sability to zip sround buh it would be great if the volume could be beefed up a bit so I don't have to rely on quantum hearing. :)

[@wafikiri_]

For anybody wondering what "doped silicon" is: You start with an as-close-to-perfect silicon crystal as you can. A perfect silicon crystal only has silicon atoms, and each atom's attachments to surrounding ones are repeatedly the same as any other in the crystal, except, obviously, at the crystal's limits. So the silicon crystal is homogeneous, with no fractures or inclusions of any kind of dirt in it. This kind of crystal is an excellent electric insulator. An electron, to jump from one silicon atom to another, would require to be given enough energy for the jump. Such an energy is called the crystal's energy gap. Such energy, if reached in one cell, would also be reached in the many other cells of the crystal. It would probably be too much for the crystal, which would probably be destroyed by electron avalanche. That is why electronic devices work with only a few volts. You can, however, create some irregularities in the crystal, tiny ones. For example, you can replace one every 10^12 or 10^14 silicon atoms with an atom of, for example, phosphor or indium. This is doped silicon. You dope silicon by subjecting the silicon crystal to, say, 700º C, or 1300º F, in an oven filled with a gas of the desired dopant type. The gas slowly diffuses into the crystal. Then the doped silicon crystal is no longer an insulator but a semi-conductor. A diode has two different dopants in two different, adjoining crystal areas, respectively. One area gets an extra electron per 10^14 silicon atoms (if that was the doping density); the other one lacks an electron (it gains a positive "hole") accordingly. Thus there is a net, weak electric field in the junction of the two areas that overcomes the insulating energy gap between silicon crystal layers, but very diluted. An electric current can then easily traverse the junction and the crystal in one direction, but not in the opposite. So this is an anisotropic semi-conductor material. Transistors are more complex than diodes but the same doping procedure is followed, only in three doping areas instead of two.

[@diamondisgood4u]

I knew what it meant to be doped but I never knew how it happened thank you for explaining almost all the details needed that concisely!

[@wafikiri_]

@@diamondisgood4u Most welcome. Glad I could be of help.

[@wordprocessbrian4497]

a point with a property is a (x=l)line. force applied to the property of the line is a virtual circle , or a radius in motion(y=o). A radius in motion with force applied to the motion is a sphere or two radius(z=v) in motion. (x,y,z)=(l,o,v)= shape of symbol to store abstract information. (-1/12 : 1 : 1/12) = (H ori Z on N) between (l:o:v) : (v:o:l) = [(2/3+2/3) : (3/4+1/3)] = Z (90 degree) N HoriZonN process cycles result in [(H on Z) on N] or [N(on H on Z)]

[@doodelay]

This is my first time hearing of QM = GR today, of course it's susskind's idea. Fucking legend.

[@Treebark1313]

@@DeltaParadoxLLC Wolfram's TOE -- conveniently available with a license from ... Stephen Wolfram 🤮

[@PavlosPapageorgiou]

21:40 "Tom-ography" :)

[@travisheck5979]

How does one take a complete set of measurements of the qubits of.a black hole??? Or use quantum operators on it?!

[@rhinobird]

that's merely engineering details

[@moofymoo]

didn't know that Mike from breaking bad is into quantum physics.

[@dylanotto]

heisenburg was also uncertain

[@bobrobertson3558]

@@dylanotto lol ! Good one !!

[@_DarkEmperor]

@@dylanotto And Pauli wants to exclude.

[@PrivateSi]

In a sea of mobile Planck Points that are (instantly..) attracted to empty space but (instantly start to) repel each other forming a close-packed matrix entanglement is entangled gravitational-electric streams that flow from particles - glitches/warps in the matrix... If a point starts moving (somehow..) it carries on indefinitely as a particle and leaves a hole that forms another particle who's centre pulls in surrounding points (gravity) that repel and travel outwards (like electricity).. Entangled streams can transfer some information (ie. spin) instantly (even though particles can not travel faster than light).. What if 'perfectly joined' things can transfer kinetic information instantly even if it takes some time for the force to build up enough for movement to occur. The last particle in the chain knows what's coming (although the force drops off with distance and may not be enough to actually move the last particle. even though it 'feels' the chain is being pushed (compressed)). Spin comes from the close-packed matrix's (semi) discreet nature, the 12 surrounding points form a shape with two 3 point poles and one 6 point equator that can only exist in 3 orientations relative to motion. When particles move points in front are pushed forward and then loop back as the empty space behind pulls in cores. These naturally form magnetic field line-like streams that also provide inertia... Colliding particles 'feel' they are going to collide before they do. When they do it takes some time for the force to change the 'kinetic (quantum-magnetic?) field' direction.

[@Unidentifying]

i wonder the state (no pun) of this now, because they have working quantum computers with some limited amount of qubits and they already did some experimentation regarding some concrete physics

[@StephenPaulKing]

The idea that the CFT 'shell' is embedded in another space, such is implied by the idea that Alice and Bob can act on their respective shells, has to NOT be taken literally!

[@ozzymandius666]

1. Alice performs a delayed choice quantum eraser experiment. 2. Alice takes the entangled measurement system with her to a distant place (say 1 light hour away) but she doesn't destroy it, unless she meets Charlie as soon as she arrives at her destination 3. Alice has told Bob to wait by the scintillation screen, without observing it, with a note saying "Wait an hour, then look at the scintillation screen, if you see a wave-like distribution, that means I have met Charlie." Would this not mean that a signal from Alice to Bob regarding the presence or absence pf Charlie has been sent to Bob instantaneously? The ER=EPR hypothesis suggest so.

[@JohnDlugosz]

Bob will see random stuff. It won't be until he gets the classical information from Alice that he knows how to interpret it and see the patterns. That is commonly explained in delayed-choice explanations.

[@Jamex07]

Wait, whenever entanglement occurs in sufficient concentration, gravitation will also be present?!?! That means that materials with variable mass are possible. Edit: Wait, would this also mean that hot objects would become more massive, too?

[@jmod1892]

Wormhole 2 to travel backwards or forwards in dimensional time and space. You take the same principle of the natural black hole that i explain on comments on one of the other videos on this channel to do with black holes but you make them yourself by same math as method 1 explained here and you place them in a bind of quantum memory these will clearly be smaller version variations of the real deal you go in with your calculated mass to distance output and whatever way the hole is made positive negative red shift in or vice versa blue in etc and the spinning bowl hole catapults you to the equivelenced distance to the mass you entered it with. (james samuel raybould)

[@jmod1892]

Its on the quantum error video i descibe the workings of the blackholes

[@wacksparrow88]

Be interesting if the calculation is planks constant - the difference or relation to 10^-128(nima sorry if I spelled his name wrong) to the rotation of either a solar mass or even a black hole(15 solar masses) some weird relation. Basically it would be like taking instruments playing the same song yet spinning them at a frequency(or changing the chambers to produce the same frequency or song)

[@wacksparrow88]

Thought this similar to the supermassive black hole possibly being a misnomer of more of many supernovas causing disturbance to make a faux supermassive black hole. Could be making the term singularity a constant rather than a end game(as in a compromise maybe) sorry for my ignorance, still learning.

[@wacksparrow88]

34 mins is a great image to think about especially with color(great for computers I think as well) because you can apply shades using simple or complex numbers and then substitute complex or simple numbers as vectors or chords to either represent energy or frequency. Sorry for jumping in. Just wanted to give some input

[@jiacongfang8787]

nice pictures

[@silberlinie]

Es ist zutiefst schmerzend so nahe an der Schwelle zu einer neuen Entdeckung zu stehen. Aber immer noch durch so viel tief verwurzelter Unwissenheit getrennt.

[@dankurth4232]

ER=ERP is a rapidly developing research project and the most promising candidate for Quantum Gravity. Most of the unknown is known unknown, i.e. die Unwissenheit hält sich in Grenzen

[@davidwilkie9551]

Yes And, WYSIWYG, a plain-plan of ideal-points of current activity orthogonal to, or built upon vertically, ..a stratified history aligned with gravity, ..Quantum Mechanism p-brane or picture plane and Black-receding vanishing points. It's the formula/format quantum unity and multiplicity, of time-timing duration model-ing by module-ation, so it's the infinite quantized spiral (embedding) from photons/phonons to galaxies and clusters, all quantum chemistry. Which implies that the jump between quantum scales is interpretable as a candidate for the worm-hole for large "vertical" scale shifts, ..more like ideal gas hydrodynamics for equivalent transverse/"horizontal" scales... Shifting by cofactor multiples/Quantum mechanism. _____ The interpretation of probability wave-packages and relative-to-sync-timing for multi-phase states of mass, momentum and acceleration phenomena of QM-Time Principle In-form-ation is either a frequency modulation or reciprocal amplitude amplification aspect of connection. An oversimplified model, of the old pre-digital telephone networking by rotary switches and landline distribution of AM-FM communication, is a situation/"place of origin" to begin thought experiments on how Timing-spacing in Quantum e-Pi-i coordinated resonances operates as an eternal probability distribution properties, aspect of Infinity. (Best of luck with that, it's historically an unresolved problem in conveying this "order out of chaos" conception process)

[@kennethchow213]

General relativity and quantum mechanics are always unified. The same law of physics, when applying from infinity to 10^ - 10 meter, is classified as G.r. and when applying from 10^ - 10 meter to the Planck Length, is classified as Q.M.. Such classification was made without good reason, other than perception and convenience. G.R. does not "break down" at the Planck scale as is often said, because G.R. is Q.M.. They are the same law of physics perceived to be different only because they apply in different phase spaces

[@frun]

Yes, G.R. does not "break down" at the Planck scale, QM does :D

[@nyttag7830]

If alices lab is in a spaceship traveling at ligth speed when will t come out.

[@Achrononmaster]

Can anyone explain why the ERB's have to be "quantum mechanical"? Why can't the teleportation "without a trace in the laboratory space" work with plain old GR ERB's?

[@khalidashraf7510]

Read his ER=EPR paper. For teleportation you need two entangled systems on two sides. Through ADS-CFT, these entangled systems are equivalent to bulk quantum gravity (not classical).

[@NightmareCourtPictures]

I'd pay to have my photons jiggled

[@TheKoelnKalk]

That's fucking groundbreaking

[@christiandinkel8481]

5:00 its properties, not it's ;-)

[@alvaroxex]

Wow, what a lecture you gave know-it-all.

[@nolan412]

The Infinitive of Go

[@nolan412]

Getting heavier. Atari!

[@nolan412]

Whew. Thought Ashayanna Deane had holographic priority.

[@epolanowskirn]

If ever, someone were to tell you how gravity works in both quantum mechanics and GR, you might hardly notice....

[@epolanowskirn]

Pay attention around t:48 min

[@KyleDB150]

Don't read the comments, it's full of people presenting their personal pet thesis, while using the least amount of punctuation and most technical words possible.

[@ASLUHLUHCE]

1:00 to 3:45 is all I can currently understand haha

[@badmintongo4832]

Derivatives (of any order) of primary fields are called descendant fields. Their behaviour under conformal transformations is more complicated. Correlation functions of descendant fields can be deduced from correlation functions of primary fields. However, even in the common case where all fields are either primaries or descendants thereof, descendant fields play an important role, because conformal blocks and operator product expansions involve sums over all descendant fields. The collection of all primary fields rho, characterized by their scaling dimensions and their representations, is called the spectrum of the theory. A conformal field theory is unitary if its space of states has a positive definite scalar product such that the dilation operator is self-adjoint. Then the scalar product endows the space of states with the structure of a Hilbert space. In Euclidean conformal field theories, unitarity is equivalent to reflection positivity of correlation functions: one of the Osterwalder-Schrader axioms. Unitarity implies that the conformal dimensions of primary fields are real and bounded from below. The lower bound depends on the spacetime dimension, and on the representation of the rotation or Lorentz group in which the primary field transforms.

[@davidwilkie9551]

The terminology of Spacetime is "Not even wrong" relative to Timespace, for amateur translators, who understand the Big Bang Theory to be less than half the story.., probably about 4-5% of visible material in the general darkness of otherwise available means of comprehension? After some years of attempts, I can recognise what the intended meaning of the Bridge and Quantum Tunnel is, but this is like watching a movie frame by frame, an effect without visible and therefore imaginable cause, (ie not a "god"), other than some implausible theories. Which is why I wonder if this is why String Theory is less accepted than it could be as a product of Superspin Modulation of Vectors in/of Time interference resonance functions? Stacking up resonances to build the observable properties of a Hologram isn't easy without some visualisation, Projection Drawing practice, it's somewhat like building a house or some other complex structure that fades into view in time lapse video. The Actuality is similar except the shifting emphasis/focus, (in keeping with the laws of Physics), is run forward and reverse simultaneously, showing the "pumping up" of the structures and condensation into strands/bubbles of wave envelope packages.., similar to the videos of the large scale condensation structure of the Astronomical Universe, that is, if the inflation/projection part of the process was combined as it is in Actuality/QM-Time Modulation Principle. _____ QM=GR, if all we know about it is that Math-Physics abstractions are comparing and colating phase-shifts in coherent cohesion objectives, in this case wormhole vertices in vortices of pulsed resonances, in the Universal omnidirectional-dimensional Black Hole Singularity Conception, or Origin of Superspin, reciprocal holographic positioning of e-Pi-i interference numbness in structural temporal resonance. I know I don't know much about it, except to say that Professor Susskind has developed several paths of physical reasoning that all trend towards combining in holograms. The pre-existing threads of memory association techniques that Geometer's Navigation Calendars and Timing-spacing devices used to position mind and body have decayed into horoscopes and religions, of fantasy and misattribution of phenomena to self-qualified authority, in place of the established regenerative temporal observation. Otherwise, we might already understand the Actuality of the Observable time duration timing-> modulation rates differentiation/integration Hologram.

[@jimhenson9255]

MR. GQ

[@brownj2]

He is a physicist. They somehow have drawn the conclusion that the clothes do not make the man.

[@veganwolf3268]

How does someone fall into a black hole and survive? Tom would be destroyed before he ever makes it through the wormhole between two black holes.

[@NathanOkun]

Remember the horror movie THE FLY? If the Photon + TOM is replaced by a FLY + TOM, you can get that movie results. Isn't that amazing? A movie that knew physics better than the scientists did, by accident!

[@NightmareCourtPictures]

word.

[@JohnVKaravitis]

String theory: A complete WASTE of the last 50 years. Thanks, Sussie!

[@dankurth4232]

@ John Karavitis What a waste of comment

[@JonathanLangdale]

Wormholes have no interior. Susskind drawing wormhole interiors with length and volume. SMH. It is relatively infuriating to see them so close to the cusp of new discovery, yet still separated by so much ingrained ignorance.

[@carnsoaks1]

Flat Earth or Strangled Entanglement? What's your preferential platform?

[@JonathanLangdale]

If the Earth is a holographic 3+1, then I suppose a 2+1 background plate could be considered to be "flat."

[@BobBogaert]

Write a well-sourced paper and tell them Stanford fools all about it. Scientific fame is yours for the taking.

[@BartAlder]

Infuriation is not a relativistic invariant.

[@misterkriskooper]

He draws it that way as an intuitive simple translation. Do you also have a problem with him drawing black holes as holes?