Episode 45: Leonard Susskind on Quantum Information, Quantum Gravity, and Holography

Ғылым және технология

Blog post with audio player, show notes, and transcript: www.preposterousuniverse.com/...
Patreon: / seanmcarroll
For decades now physicists have been struggling to reconcile two great ideas from a century ago: general relativity and quantum mechanics. We don’t yet know the final answer, but the journey has taken us to some amazing places. A leader in this quest has been Leonard Susskind, who has helped illuminate some of the most mind-blowing ideas in quantum gravity: the holographic principle, the string theory landscape, black-hole complementarity, and others. He has also become celebrated as a writer, speaker, and expositor of mind-blowing ideas. We talk about black holes, quantum mechanics, and the most exciting new directions in quantum gravity.
Leonard Susskind received his Ph.D. in physics from Cornell University. He is currently the Felix Bloch Professor of Physics at Stanford University. He has made important contributions to numerous ideas in theoretical physics, including string theory, lattice gauge theory, dynamical symmetry breaking, the holographic principle, black hole complementarity, matrix theory, the cosmological multiverse, and quantum information. He is the author of several books, including a series of pedagogical physics texts called The Theoretical Minimum. Among his numerous awards are the J.J. Sakurai Prize and the Oskar Klein Medal.

Пікірлер: 279

  • @timenotspaceproduction
    @timenotspaceproduction5 ай бұрын

    i think that i'm supposed to be here right now , listening to this whole conversation while i'm working in the studio today 🧬

  • @NuclearCraftMod
    @NuclearCraftMod5 жыл бұрын

    Sean Carroll and Lenny Susskind... awesome :)

  • @randallmcgrath9345

    @randallmcgrath9345

    3 жыл бұрын

    2 of my favorites, along with Brian Greene, and increasingly, Alan Guth. I also found one of Alex Vilenkin's books.

  • @aclearlight

    @aclearlight

    3 жыл бұрын

    @@randallmcgrath9345 when i hit the wappijuu7

  • @aclearlight

    @aclearlight

    3 жыл бұрын

    M, what are YOUR intentions?

  • @stephenkamenar
    @stephenkamenar4 жыл бұрын

    Leonard Susskind is a living legend

  • @Bpaynes
    @Bpaynes5 жыл бұрын

    Leonard Susskind one of the most brilliant scientists of our generation; also sounds like he could beat the shit out of you in a bar fight lol

  • @zachfrazier8027
    @zachfrazier80275 жыл бұрын

    "Your optimistic, I'm 78." Hilarious

  • @rumidude
    @rumidude5 жыл бұрын

    Lenny Susskind is a delight! Thank you for having him on the Mindscape Podcast!!!

  • @ZacksMetalRiffs
    @ZacksMetalRiffs5 жыл бұрын

    I'm a simple man. I see Susskind in the title and I click instantly.

  • @CstriderNNS

    @CstriderNNS

    4 жыл бұрын

    your lost

  • @readingRoom100

    @readingRoom100

    3 жыл бұрын

    Only because all his previous talks have failed u lol

  • @lukegratrix

    @lukegratrix

    3 жыл бұрын

    You recognize genius when you see it. Says something about you Zack

  • @harsszeg

    @harsszeg

    3 жыл бұрын

    U belong to the 90 percent ...do not worry Susskind is 0.01 percent, I love him and still get lost.....its not for everybody

  • @jaykingston2171
    @jaykingston21714 жыл бұрын

    I idolize Leonard Susskind, I've read and watched just about everything I can find that's been published by him. His fascinating YT lectures introduced me to science and they led me to seek further education. He's one of science's greatest minds.

  • @alexmartos9100
    @alexmartos91005 жыл бұрын

    Have never clicked so fast in my life!

  • @dumpsky

    @dumpsky

    5 жыл бұрын

    just click PLAY 1x. the video then should play automatically.

  • @cozy_af2090

    @cozy_af2090

    4 жыл бұрын

    You always had and always will click as fast as was predetermined.

  • @bendavis2234
    @bendavis22342 жыл бұрын

    I highly recommend watching his theoretical minimum lecture videos on KZread. He explains many key equations and proofs without getting too deep into the weeds. He’s such a great lecturer.

  • @Jaroen66
    @Jaroen665 жыл бұрын

    I rarely give instant likes on YT videos, but this one required it

  • @jeremita0

    @jeremita0

    5 жыл бұрын

    same here, instant like

  • @pxlarquitectos

    @pxlarquitectos

    4 жыл бұрын

    wow your clicks are so wonderful and rare, Sean Carroll is a lucky man

  • @erictko85
    @erictko854 жыл бұрын

    59:24 "And the other thing that makes you think you're on the right track, is when something that you've been thinking about, turns out the same mathematics, the same sets of principles, turn up in another area..." awesome to hear stuff like that from one of the great theoretical minds I've had the pleasure of listening to. Thanks Drs. Carroll and Susskind,!

  • @ed.puckett
    @ed.puckett4 жыл бұрын

    Dear Dr. Susskind, the story about your father at the end was very touching to me personally because you have become a teacher of mine as well. Thank you.

  • @TheSchultzZ
    @TheSchultzZ5 жыл бұрын

    i love listening to this even tho i dont understand anyting thanks sean love u

  • @dianabudzik7636
    @dianabudzik76364 жыл бұрын

    Immense thanks for having on the brilliant and wonderful Leonard Susskind!

  • @manishsingh-vk8if
    @manishsingh-vk8if5 жыл бұрын

    This conversation was really very illuminating. Thank you Sean.

  • @FABRIZIOZPH
    @FABRIZIOZPH5 жыл бұрын

    What I like about him is that he always proceeds with caution with what he says,, Even in response to some of Sean's comments, Because he values very much the meaning and power of every single word, And that is because the only way to truly understand every concept and make real progress with a theory is to be very very clear about the type of questions you ask and the framework your start from

  • @AstroFerko
    @AstroFerko5 жыл бұрын

    So glad you made this episode! Thanks! :)

  • @robertglass1698
    @robertglass16985 жыл бұрын

    So, great. Even though I've spent several hours listening to both of these guys talking before, I now understand the Holography better from this than I ever had before.

  • @tomwimmenhove4652
    @tomwimmenhove46525 жыл бұрын

    I am ridiculously excited about this one :)

  • @freeair9460
    @freeair94604 жыл бұрын

    GREAT pod cast..! Several of my favorite subjects of science

  • @gloomyend7452
    @gloomyend74525 жыл бұрын

    I've listened to all your podcasts, I'm addicted to your voice and knowledge. Thank you 🖤

  • @Anita_Bath

    @Anita_Bath

    5 жыл бұрын

    Even so, "i'm addicted to your voice" is a creepy thing to say in general.

  • @gloomyend7452

    @gloomyend7452

    5 жыл бұрын

    @@Anita_Bath not when it calms down my panic attacks.

  • @readingRoom100

    @readingRoom100

    3 жыл бұрын

    @@gloomyend7452 have u considered a 12 step program

  • @grahamhenry9368
    @grahamhenry93685 жыл бұрын

    Seeing the title of this episode was like Christmas morning as a little kid. My two favorite people to listen to on the same podcast? The only thing I wish they had discussed in more detail is the ER = EPR idea

  • @bikashthapa7316
    @bikashthapa73165 жыл бұрын

    thank you so much i've been waiting for this so long

  • @johnqpublic2718
    @johnqpublic27185 жыл бұрын

    Great way to start my work day listening to these two brains.

  • @wilfredoaldarondo5649
    @wilfredoaldarondo56495 жыл бұрын

    Me too. I was waiting to hear the latest Leonard's thinking about recent findngs and the future of probing string theory and holografic principle.

  • @Well_Earned_Siesta
    @Well_Earned_Siesta5 жыл бұрын

    Yes! Figured/hoped you'd get around to having Susskind on the podcast!

  • @brinx8634
    @brinx86345 жыл бұрын

    Great guest and an interesting talk, thank you Sean.

  • @LiorSL1
    @LiorSL14 жыл бұрын

    As a computer science student and physics enthusiast i think the collaboration of both fields is amazing as was stated here , Awesome podcasts ! :)

  • @AstroFerko
    @AstroFerko5 жыл бұрын

    This episode is absolute gold

  • @Cnidarian64
    @Cnidarian645 жыл бұрын

    Just discovered this podcast from KZread recommended. Now I have 45 episodes of science podcasts to listen to 😀

  • @vr_37300
    @vr_373005 жыл бұрын

    Haven't listened to, but already liked. Kudos for inviting a legend.

  • @ugowar
    @ugowar5 жыл бұрын

    I can only wish this chat had gone for another hour at least, always a pleasure to listen to Leonard.

  • @joyecolbeck4490
    @joyecolbeck44905 жыл бұрын

    Thoroughly enjoyable - an hour too short! Huge thanks to Lenny and Sean for another great podcast. 😎

  • @nathanmiller200
    @nathanmiller2004 жыл бұрын

    I enjoy listening to both of you. Listening to Susskind is like my Morgan Freeman. I hope one day I can continue my physics degree. I majored in physics in college but college became too pricey.

  • @WildAnimalChannel
    @WildAnimalChannel5 жыл бұрын

    I like listening to geniuses. There's no flim flam and waffle. Just pure thoughts.

  • @aerx
    @aerx5 жыл бұрын

    Omg I have not even watched and I know this is going to be great!

  • @volaireoh883
    @volaireoh8835 жыл бұрын

    Superb thank you Sean and Lenny.

  • @asylumofglass
    @asylumofglass5 жыл бұрын

    OMG He did it! He really did it! Thanks so much for this!

  • @michaelbruns449
    @michaelbruns4492 жыл бұрын

    Profound bedtime stories, listening to these mind bending nightmare inducing discussions, through real headphones in the dark.

  • @sinarain101
    @sinarain1015 жыл бұрын

    It was delightful listening to this podcast

  • @jaimecassar8427
    @jaimecassar84275 жыл бұрын

    Thanks Sean & Lenny!

  • @elphidium
    @elphidium4 жыл бұрын

    Hi Sean, I really enjoy your podcast! Keep up the good work! Have you ever considered talking with Max Tegmark about his idea of the "Mathematical universe"?

  • @johnphil2006
    @johnphil20065 жыл бұрын

    The most awaiting one ....!

  • @mitchkahle314
    @mitchkahle3145 жыл бұрын

    Wonderful. Thank you.

  • @yaserthe1
    @yaserthe15 жыл бұрын

    Brilliant, lets get the snacks and coffee ready. This should be awesome.

  • @elontusk1168
    @elontusk11685 жыл бұрын

    Just bought your book *spacetime and geometry, an introduction to general relativity* Can’t wait for it to arrive in the mail!!

  • @silentbooks3879

    @silentbooks3879

    Жыл бұрын

    How was it?

  • @michaelmcmurray9252
    @michaelmcmurray92525 жыл бұрын

    Very nice discussion. Stimulating !

  • @user-ep6qc6by7x
    @user-ep6qc6by7x3 жыл бұрын

    two brilliants I admire!

  • @coecovideo
    @coecovideo5 жыл бұрын

    great guest thank you

  • @DongLabUTHSCSA
    @DongLabUTHSCSA5 жыл бұрын

    Great job Sean

  • @robatalan
    @robatalan5 жыл бұрын

    I'm putting my headphones on for this one 😎

  • @Ascendlocal
    @Ascendlocal4 жыл бұрын

    Absolutely phenomenal exchange between two of the smartest, respected and cutting edge theorists of our species

  • @HouseJawn

    @HouseJawn

    4 жыл бұрын

    Of our species?

  • @georgefrichter4596
    @georgefrichter45965 жыл бұрын

    physicist and fan of Susskind for ~ 30 years, what great fun!

  • @georgefrichter4596

    @georgefrichter4596

    5 жыл бұрын

    My dissertation used the Kogut-Susskind Hamiltonian as a starting point for lattice computation experiments. Thanks Lenny!

  • @jakelabete7412
    @jakelabete74125 жыл бұрын

    Awesome. Two of my favorites.

  • @CriticalPhemomenon
    @CriticalPhemomenon5 жыл бұрын

    This is awesome ...

  • @theomanification
    @theomanification5 жыл бұрын

    Cool fact...Sean actually played the intro live with Lenny on base

  • @Erwanito123
    @Erwanito1233 жыл бұрын

    I think we can all thank lenny for doing what he's doing, I myself am a computer science student and this type of talk is amazing I never thought about learning such things in a field that distant of mine (I figured out not that distant actually lol)

  • @RKarmaKill
    @RKarmaKill3 жыл бұрын

    2 genius personalities coming together for our beautiful entertainment and learning Pure

  • @lukegratrix
    @lukegratrix3 жыл бұрын

    Dream big like these two and share your crackpot thoughts, because the next Sean and Lenny are already out there thinking deeply and trying to make sense of the world. Best possible interview on the subject IMHO!

  • @MoebiusUK
    @MoebiusUK5 жыл бұрын

    This is such a treat

  • @studham1
    @studham13 жыл бұрын

    Cool... Sean inviting some Tim Morton ideas into the convo... i love when physicist bring up philosophers and vice versa

  • @HouseJawn
    @HouseJawn4 жыл бұрын

    Great podcast, abrupt ending 😆 "okay gotta go!"

  • @YoshiTatsu1
    @YoshiTatsu15 жыл бұрын

    This deserves billions of more likes

  • @constpegasus
    @constpegasus5 жыл бұрын

    Love these videos.

  • @sawwil936
    @sawwil9365 жыл бұрын

    Just started listening, already know this is historical

  • @ecruzd3rd
    @ecruzd3rd3 жыл бұрын

    Wish there was video for this as well

  • @Jason-gt2kx
    @Jason-gt2kx5 жыл бұрын

    Sean, my hypothesis that Dark Matter is not a WIMP, but maybe is a deformation of space-time by which the curvature of space-time ALONE is the cause of the gravitational effect. Gravity is the consequence of the curvature of space-time. It may be possible that the structure of space-time itself could be warped without the presence of mass. Space-time has been shown to react like a fabric by warping, twisting, and propagating independent of mass. These properties have been proven with observations of gravitational lensing, frame dragging, and now gravitational waves. Fabrics can be stretched, pressured, and/or heated to the point of deformation. Such extreme conditions were all present during inflation, so it is plausible that space-time’s elastic nature could have hit its yield point and permanently deformed. Therefore, if gravity is the consequence of the warping of space-time, and fabrics can be permanently deformed, then a deformation could create a gravitational effect independent of mass. Thus, the unidentified dark "matter" that seems to be so elusive to modern science may not be matter at all but merely warped deformities causing gravitational effects. DM could be a microscopic black hole with no mass at the center... Prediction: Spacetime's elastic property hits a yield point, so only that part of geodesic's "stretch marks" would remain after inflation stopped. These steep gravitational wells would not follow the inverse square law. Any thoughts?

  • @amadexi

    @amadexi

    5 жыл бұрын

    If space-time had plasticity, it would make it much less fundamental than what it seems to be.

  • @chrisstewart4288
    @chrisstewart42885 жыл бұрын

    Great video!

  • @keith.anthony.infinity.h
    @keith.anthony.infinity.h Жыл бұрын

    I love listening to Leonard Susskind he is very direct and clear with how he presents things. But the main thing I love about him is his ideas because I am working on something which focuses on the topic of quantum information and black holes. I found an equation which shows how surface area entropy can be used to conserve information about different quantum properties of electrons in atoms as body of mass collapses to a black hole. If anyone wants to hear about it and discuss please feel free to watch the videos on my channel.

  • @RyanWalshGuitar
    @RyanWalshGuitar5 жыл бұрын

    omg SO EXCITED!!!!!!!!

  • @AlphaFoxDelta
    @AlphaFoxDelta4 жыл бұрын

    I have never had an hour go by so fast

  • @doodlepadhi9103
    @doodlepadhi91033 жыл бұрын

    He is truly Leonard

  • @Fritzybedeek
    @Fritzybedeek4 жыл бұрын

    I wish the two of you would address Roger Penrose's CCC. Seriously.

  • @ThalesPo
    @ThalesPo4 жыл бұрын

    The content was very good, but as I always say, you have to get a volume compressor in order for the audio to be good.

  • @Fritzybedeek
    @Fritzybedeek4 жыл бұрын

    Missed asking Roger Penrose about information being lost. Too bad. Hope you get Lee Smolin or someone from Perimeter Institute. Would be nice to hear some deeper critique of Inflation and Quantum Mechanics.

  • @chrisrecord5625
    @chrisrecord56255 жыл бұрын

    In anticipation of the Scott Aaronson interview, see the article by Ben Lindbergh, in The Ringer, where he discuss time travel in the Avengers:Endgame, and he interviews Aaronson referring to Aaronson, as today's Tony Stark, even though Aaronson has yet to see the movie.

  • @chrisrecord5625

    @chrisrecord5625

    5 жыл бұрын

    If I accidentally drop my library book into a black hole and by ER=EPR, the two black holes are maximally entangled, do each of the black holes contain the information in the book? Nota bene to both of you as a liberal arts major, I appreciate so much you continued efforts to instruct the scientifically unwashed. (Nevertheless, are the black holes liable for the library fines? Me so ornery.)

  • @robertnewhart6969
    @robertnewhart69693 жыл бұрын

    Can you use quantum entanglement to create instant communications (ftl) between vast distances as long as the 2 communication stations start out together?

  • @hmbs1630
    @hmbs16305 жыл бұрын

    Have always wanted to ask Sean why there has been such a great deal of resistance from physicists to write technical books for a public audience. Lenny really has pushed the envelope in this regard and has largely been a sole outlier.

  • @kennelson5096
    @kennelson50964 жыл бұрын

    somewhat late on checking this out but simply brilliant

  • @smxnke
    @smxnke2 жыл бұрын

    Loved it

  • @johnmcntsh
    @johnmcntsh5 жыл бұрын

    Wow, just wow.

  • @ddavidjeremy
    @ddavidjeremy3 жыл бұрын

    Great scott!

  • @cryptolicious3738
    @cryptolicious37383 жыл бұрын

    so awesome!

  • @panlan1
    @panlan15 жыл бұрын

    instant click and like ..this is like the main billing ..

  • @slamrn9689
    @slamrn96894 жыл бұрын

    Have you ever had David Gelernter on? I am sure you could come up with a topic. Great show btw.

  • @WonderBreed
    @WonderBreed5 жыл бұрын

    Thank you so much for this.

  • @calvingrondahl1011
    @calvingrondahl10113 жыл бұрын

    I respect all the scientists but being a retired editorial cartoonist I am more monkey than human. Your honesty with humor is what I need the most.

  • @cmdr.shepard
    @cmdr.shepard5 жыл бұрын

    17:00 How can you jump inside event horizon and leave? What does "jump in" mean? Something else?

  • @atagkr
    @atagkr3 жыл бұрын

    Two great scientists

  • @rohitrathi4552
    @rohitrathi455227 күн бұрын

    Is the plank length on the shell the same as the plank length inside the shell ie our plank length? It shouldn’t be?

  • @michaelmcmurray9252
    @michaelmcmurray92525 жыл бұрын

    Qubits may not increase switching capacity at all. Signal manipulation in weak nucleus on the other hand offers much faster information transfer.

  • @Nahulanham
    @Nahulanham3 жыл бұрын

    One has to bare in mind, regardless of derivatives sciences, that fundamentally the models we use are just that 'individual pictures,' and not to be misconstrued of evidence of what the universe really is outside of these pictures. Art, in this sense, precedes math and not vice versa.

  • @DanielFoland
    @DanielFoland5 жыл бұрын

    ZOMG Best guest ever. First of a series? We need a Many Worlds vs. Hologram deathmatch, please. An hour of "WHO DO YOU THINK YOU ARE TO SIT AT THAT DESK? I KNEW THAT MAN!" from Dr. Susskind would be 12 kinds of awesome.

  • @madderhat5852
    @madderhat58525 жыл бұрын

    22:00 100% agree. But what do I know?

  • @mrspiers27
    @mrspiers273 жыл бұрын

    I wonder about quantum information loss when merging black holes partially evaporate due to gravity waves?

  • @insertoyouroemail
    @insertoyouroemail4 жыл бұрын

    Could you use a wormhole to travel at the speed of light?

  • @Mike-nf6nf
    @Mike-nf6nf5 жыл бұрын

    Sean, can you try to get Nima Arkani-Hamed on? If I recall correctly, you two disagree on whether particles are point-like or waves. It would be interesting to hear you discuss this on the podcast. Thanks!

  • @CstriderNNS
    @CstriderNNS4 жыл бұрын

    i dont know where they get there info from "( they only have QC of a feu qbits ") , considering the pentagon just purchased a 500 qbit DWave QC form google, ??

  • @tokajileo5928
    @tokajileo59283 жыл бұрын

    a photon has a speed c in vacuum so i always know its speed and its position from its source after n seconds is lightspeed*n. so was Heisenberg wrong?

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