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@nitingupta8605
@nitingupta8605 Күн бұрын
if you're familiar with the Krylov complexity business then this is an exceptionally clear talk - many thanks for the upload!
@SeleneDing
@SeleneDing Ай бұрын
of course it is incorrect. I can't imagine how arrogant one has to be to believe our current understanding of the universe is correct. we may be not even wrong.
@김준-u5v
@김준-u5v Ай бұрын
상서해서 가후위기해결해보자재안해도 아무반웅없는것이 지배계급입니다, 자료출판하자해도 이다지도무반응 한것이 정부가있는 사람서는 국가닙니다 권력가진 자도지위에있는 자들이적극적으로 행동해야하는데 무슨생각을하는지 이해가안됩니다,
@클래식과학
@클래식과학 Ай бұрын
이 영상이 왜 안뜰까요 ㅠㅠㅠ
@uijinkwon
@uijinkwon 2 ай бұрын
Beautiful talk!
@etc4xg
@etc4xg 3 ай бұрын
This may be the single greatest video on KZbin
@randomchannel-px6ho
@randomchannel-px6ho 4 ай бұрын
Joel Scherk said supegravity naturally predicted antigravity!
@GreySectoid
@GreySectoid 5 ай бұрын
Gerard is the smartest person on earth.
@etc4xg
@etc4xg 3 ай бұрын
Can I like a comment twice?
@유현홍-y9v
@유현홍-y9v 7 ай бұрын
잘보았습니다 감사합니다 ^^
@stephanedubedat5538
@stephanedubedat5538 8 ай бұрын
Thank you !
@ntgt13
@ntgt13 8 ай бұрын
I feel like this free will argument was resolved by Hume. Determinism is not only compatible with free will, it is required by free will. In short, if a person's actions are not determined, then those actions are not determined by the person. We are a part of the universe, us determining an action is the same as the universe determining the action.
@bendunselman
@bendunselman 11 ай бұрын
Are there any qft on fractal models ( instead of lattice models)?
@sanjibkarjee7998
@sanjibkarjee7998 11 ай бұрын
Pranam a lots ❤
@sonarbangla8711
@sonarbangla8711 Жыл бұрын
't Hooft claims to show how quantum states evolve into classical (deterministic) state. His cellular automata mimics Stephen Wolfram theory (never peers reviewed) with the self admitted failure to prove anything. His and Stephen's ideas may have some clues to reality but they are tragically out of focus.
@silberlinie
@silberlinie Жыл бұрын
Here too, as is often the case with science presentations, you can admire the sloppiness of the accompanying graphics. The right rectangle is shorter than the left, although there is no reason for it to be different. I count six weak points at locations on the graphic where lines don't meet properly, even though they should do exactly that at their intended points of contact. An example 1:08:00 To be clear, it does not question Maldacena's genius.
@abdonecbishop
@abdonecbishop Жыл бұрын
hello Gerard... yes countable finite clocks makes near perfect quantum sense ......but ....in the timer clock replace base N with Pn where (Pn is an n^th prime number).....and....then the clock base(Pn) becomes a field clock with a 'non-degenerate' subfield base that always ticks a prime subfield that has no zero divisors.....else if ...N equals composite ....the timer clock becomes a 'degenerate' ring clock with zero divisors......and then like magic a field clock will satisfy both the fundamental theorem of arithmetic and the prime number theorem...without hidden variable contradiction
@frun
@frun 9 ай бұрын
There could be some pattern behind mass scales. " If we take the sectoral (90 degrees) area of the logarithmic (golden) spiral as the lepton mass, then in the limit we get that three successive sectors of the logarithmic (golden) spiral satisfy a condition very similar to the Koide formula"
@VideoFunForAll
@VideoFunForAll Жыл бұрын
The questions during the presentation were extremely disruptive. Questions, except for short clarifying questions, should be made after the presentation.
@Robinson8491
@Robinson8491 Жыл бұрын
So I understand from this that Quantum Mechanics should be seen as a program and the "cosmic computer" has no other property but being a clock...and underlying it all is the quantum randomness brushed under the rug at the basement of the house instead of on display on the "for sale" sign in the garden as in current Quantum Mechanics. I find it exciting that I can follow this lecture, hope one day he can give the complete story uninterrupted somewhere So as a sidenote I guess he agrees with Lee Smolin that time is fundamental! Very interesting
@MarshmallowRadiation
@MarshmallowRadiation Жыл бұрын
“Chaos is defined not so much by its disorder as by the infinite speed with which every form taking shape in it vanishes. It is a void that is not a nothingness but a virtual, containing all possible particles and drawing out all possible forms, which spring up only to disappear immediately.” -Gilles Deleuzee and Felix Guattari, What Is Philosophy?
@alexgonzo5508
@alexgonzo5508 Ай бұрын
Yep, and i think you might find the etymology of the word "random" interesting: Middle English (in the sense ‘impetuous headlong rush’): from Old French randon ‘great speed’, from randir ‘gallop’, from a Germanic root shared by rand.
@andoreanesnomeo1706
@andoreanesnomeo1706 Жыл бұрын
Very cool! Thanks!
@coachv45
@coachv45 Жыл бұрын
Another important point he made, that from the questions asked may have been missed, is the following. He stated that the evolution of the cellular automaton model is classical in nature using an evolution matrix, but made clear that classical does mean that is obeys the same laws that familiar classical things obey, like Newtonian mechanics, etc.
@coachv45
@coachv45 Жыл бұрын
The central point of his theory is that superposition states are NOT ontological states, and things that are at any point in time in an ontological state can only evolve into or occupy ontological states in the future. He showed in one of his earlier slides that a deterministic harmonic oscillator can be represented mathematically using QM terminology as an entity in a superposition state, but that's nothing more than a mathematical description of convenience, and not an ontological state. In my view, that's the clearer interpretation of QM that I have ever heard, which clears all the nonsense and folklore interpretations of QM, even by serious physicists. His theory is obviously a start but a start on solid footing.
@frun
@frun Жыл бұрын
Moreover, every QFT can be approximated by a lattice field theory. I agree, it's wise to start from lattice qft, because it's simpler and brilliant as a starting point.
@hughzimmerman3518
@hughzimmerman3518 Жыл бұрын
'PromoSM'
@Just-t7v
@Just-t7v Жыл бұрын
재미있는 토론 핵융합은 우주만물의 시작이고 초전도는 우주가 허상이라는 증명.
@deeplearningpartnership
@deeplearningpartnership Жыл бұрын
Nice.
@grizzlypetersen5320
@grizzlypetersen5320 Жыл бұрын
You are my hero
@oldtom541
@oldtom541 Жыл бұрын
Prof ‘t Hooft’s fascinating theory seems to be a form of thermodynamic theory, where thermodynamics is invoked to restrict to his low energy states. The emergent quantum theory is an instrumental aggregate ensemble model used to approximate the full deterministic reality, in the same way that the macroscopic models in classical thermodynamics model a microscopic system. This emergent behaviour is a way that those disturbed by the philosophical consequences of determinism can comfort themselves. As Einstein’s favourite philosopher Arthur Schopenhauer said “A man can surely do what he wills to do, but he cannot determine what he wills.’
@RufusBergstrom
@RufusBergstrom Жыл бұрын
Promo'SM 🤔
@frun
@frun Жыл бұрын
I read a paper which claimed the separation of scales is of the order 10^60, another one claimed 10^120. LNH states the order is 10^40.
@BMD-kp3dq
@BMD-kp3dq Жыл бұрын
꺄악~~~ 압둘 작가님!!!❤❤
@psmoyer63
@psmoyer63 Жыл бұрын
Thank you for being clear on why Bob and Alice's actions do not support Bell's inequality -- their decisions cannot be in a state of superposition. In fact, there is no such thing as superposition.
@frun
@frun Жыл бұрын
Abbot and Wise showed, that fractal dimension of qm path equals 2. Can this be the path of a *fracton* on a holographic screen? My feeling is that, the analogous process to UV/IR mixing happens in mathematical fractals and is called self-similarity.
@frun
@frun Жыл бұрын
Why can't we follow the fast variables? 52:00 Is it a limitation of our instruments(that are constructed out of slow variables)? "Bandlimited continuous quantum fields are isomorphic to lattice theories, yet without requiring a fixed lattice." "In this work, we explore the consequences of this isomorphism, including the emergence of effectively continuous symmetries in quantum lattice theories." Symmetries 1:18:03 1) I wonder if rotation symmetry can also emerge at low energy. Circles and relativity from Taxicab geometry - kzbin.info/www/bejne/jqGkkHaZgNWLrdUm37s 2,3) Lorentz & gauge symmetries emerge at low energy - kzbin.info/www/bejne/rprCY6usg7-NgNE, kzbin.info/www/bejne/jqGkkHaZgNWLrdU 4) I think it is interesting to know how BEH mechanism works in the same model(might be helpful) kzbin.info/www/bejne/rprCY6usg7-NgNE 5) I encountered some paper in which effective gravity was recovered from the lattice. The lattice was dubbed "concreton". Also in Kleinert crystal model. I hypothesise, *Fast-slow variables interactions* is an indication of self-similarity. Slow variables could be the same fast variables, but "rescaled". Dirac *Large number hypothesis* and *IR/UV mixing* also point towards this, it appears. Koide formula and Fibonacci numbers 47:39 (a hint at mass generation principle?) " If we take the sectoral (90 degrees) area of the logarithmic (golden) spiral as the lepton mass, then in the limit we get that three successive sectors of the logarithmic (golden) spiral satisfy a condition very similar to the Koide formula"
@MarshmallowRadiation
@MarshmallowRadiation Жыл бұрын
I'm not as well read in the frontiers of physics, but this makes sense to me. Not necessarily because of relativity (though that could also be a factor) but because an extreme number of low-energy states would be just as unpredictable and apparently stochastic as a high-energy system (we'd have to look deep into the past to determine the exact phase of each and every element in the system, perhaps far longer than the age of the universe in some cases. The proposed instability of the proton comes to mind). But also, a large number of high-energy states whose phase is too rapid to detect could behave like a slowly-evolving "low energy" system if certain interactions only happen when all of the phases of the high-energy constituents line up perfectly. There's enough similarity there for symmetries and equivalences to emerge fairly effortlessly, I think. This line of thinking has me thinking of the vacuum catastrophe. I'm wondering now if the ludicrously high vacuum energy predicted by QFT is actually just telling us the anti-vacuum, since the two are so symmetrical.
@frun
@frun 9 ай бұрын
@@MarshmallowRadiation How to construct those "low energy" waves from "high energy" ones? ( so that "a large number of high-energy states whose phase is too rapid to detect could behave like a slowly-evolving "low energy" system ") How did you find out, that high energy states are perceived as low energy ones ? I kind of understand rapid states can't be percieved, but still.
@IBDWJ
@IBDWJ Жыл бұрын
16:15
@JAYMOAP
@JAYMOAP Жыл бұрын
Great lectures
@grizzlypetersen5320
@grizzlypetersen5320 Жыл бұрын
He has to be right. The idea of an infinite number of other universes (and outcomes) serves only to assure us that we have free will. That idea is preposterous and we don’t.
@frun
@frun Жыл бұрын
Carl Sagan considered this possibility kzbin.info/www/bejne/iWWqkp5je5eYarc
@ThereIsNoSp00n
@ThereIsNoSp00n 11 ай бұрын
Free Willy can't exist, whether you have an infinite number of universes, or only one. If the universe is deterministic, free will is impossible. If it is probabilistic by nature, then how could rolling dices possibly magically conjure up free will? Randomness is just as much not under our control as determinism is.
@zaqi92
@zaqi92 Жыл бұрын
🎉
@Laura-fs7dj
@Laura-fs7dj Жыл бұрын
I understand from Maldacena's words that entanglement and a wormhole are the same. Entanglement talks about the absolute statistical correlation between 2 or more particles while wormholes talk about the absolute statistical correlation between 2 or more regions of space-time.
@JAYMOAP
@JAYMOAP Жыл бұрын
Here is some problem with his model. He's not taking on account that the harmonic oscillator is deformed. (Duffing harmonic oscillator). When the oscillator is deformed especially when the harmonic oscillator is a 2 component system with time reversal symmetry, he eventually mixing the 2 partition. It's the same when you replace the harmonic oscillator with a spin or represent it as a potential spin state. Instead of up and down states you get a frustrated spin. When you put this on a lattice you get a spin glass/ time crystal problem, where the entire system spin states represents energy barriers the system has to climb in order to change configuration = butterfly effect. He need to work with string theorists because they do the same with 2 fixed point saddle on genus expansion. Its essentially the riemann hypothesis in a nutshell because the zeta function is a deformed symmetry with the stripe represents an area with inertia effect
@frun
@frun Жыл бұрын
It is trivial.
@the_physicists
@the_physicists Жыл бұрын
@JAYMOAP Can you tell us more? Is this problem fatal to his theory? Is this problem related to the problems that he mentions at the end of his talk? For the problems at the end of his talk, see the first video I uploaded.
@JAYMOAP
@JAYMOAP Жыл бұрын
Legend
@JAYMOAP
@JAYMOAP Жыл бұрын
You have to inverse the genus
@JAYMOAP
@JAYMOAP Жыл бұрын
Very nice
@JAYMOAP
@JAYMOAP Жыл бұрын
Well done, nice presentation
@JAYMOAP
@JAYMOAP Жыл бұрын
Also the majorana modes on the low eneegy spectrum and the positron electron pairs on the high energies has the same description in a sense
@JAYMOAP
@JAYMOAP Жыл бұрын
There are null states or zero modes cancels
@농담곰-f7x
@농담곰-f7x Жыл бұрын
미국사람이 아니라 한국사람이군요~ 껄껄껄~
@kunalverma6940
@kunalverma6940 2 жыл бұрын
Wish there were an English translation of these lectures. The content looks really interesting as a first exposition to Condensed Matter Physics.
@broken9231
@broken9231 2 жыл бұрын
it was a neutron star
@broken9231
@broken9231 2 жыл бұрын
or at least pretending to be
@frun
@frun Жыл бұрын
You're on the right track. Usually they associate Planck scale with black holes.
@lightli9354
@lightli9354 2 жыл бұрын
박재용 선생님 훌륭하십니다. V
@lightli9354
@lightli9354 2 жыл бұрын
박재용 작가님 우주의 역사책 듣고 있습니다. 훌륭하십니다.