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/sci/ - Science & Math

File: 237 KB, 1920x1920, M-Theory_Square_1920.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sat Apr 20 18:43:47 2019 No.10575761 [Reply] [Original]

Has any other theory consumed so many geniuses without ever leading to anything?

>>	Anonymous Sat Apr 20 18:47:02 2019 No.10575773 ? M-theory is a quite successful.

>>	Anonymous Sat Apr 20 18:48:58 2019 No.10575779 >>10575773 No theory is successful if it cannot be tested.

>>	Anonymous Sat Apr 20 18:54:34 2019 No.10575793 >>10575761 How is it successful?

Anonymous Sat Apr 20 19:26:05 2019 No.10575852

>>10575779
M-theory is the unification of decades of divergent string theories. That's a success in of itself.

Now as to measurable success outside of string theory itself, there's string theory's relation with quantum mechanics. String theory was tied to Quantum Mechanics via the AdS/CFT correspondence. This solves the problem of black hole information paradox and thus quantum gravity.

On top of that, there's the current meme of Holographics universe problem that Hawkings was working on. Its string theory in motion.

>>	Anonymous Sat Apr 20 19:35:43 2019 No.10575871 >>10575761 How does the String theory predict Black Holes? Does the Singularity appear in the math?

>>	Anonymous Sat Apr 20 19:59:25 2019 No.10575912 >>10575871 Not sure if it depends on the specific theory, but at least some lead to extremely dense balls of string with no singularity.

>>	Anonymous Sat Apr 20 20:27:21 2019 No.10575955 >>10575852 Also, M-theory is probably the "next" step after Quantum Mechanics.

>>	Anonymous Sun Apr 21 05:22:52 2019 No.10576853 The M in M theory stands for meme :^)

>>	Anonymous Sun Apr 21 05:25:57 2019 No.10576858 File: 998 KB, 300x300, gFpAMa3.gif [View same] [iqdb] [saucenao] [google] A yes, above 10^500 topologies with no way to figure out which one is the correct one.

>>	Anonymous Sun Apr 21 06:00:20 2019 No.10576905 >>10576858 Does it really matter if they mean no measurable differences?

>>	Anonymous Sun Apr 21 08:08:32 2019 No.10577120 >>10576905 There are measurable difference at high energies.

>>	Anonymous Sun Apr 21 08:09:40 2019 No.10577124 >>10577120 And t low energies! Each topology gives a different low energy theory.

>>	Anonymous Sun Apr 21 08:36:00 2019 No.10577202 >>10576858 No way? Just use a neural network.

>>	Anonymous Sun Apr 21 08:55:41 2019 No.10577231 >>10577202 Go for it. Let me know how it turns out.

>>	Anonymous Sun Apr 21 09:01:53 2019 No.10577239 >>10577231 >>10577202 People are already doing this https://arxiv.org/pdf/1706.02714.pdf

>>	Anonymous Sun Apr 21 09:05:35 2019 No.10577246 >>10577239 oh.. neat!

>>	Anonymous Sun Apr 21 09:06:30 2019 No.10577248 >>10577239 very interesting.

>>	Anonymous Sun Apr 21 10:13:39 2019 No.10577388 >>10575871 p-branes, stacks of d-branes and their various junctions

>>	Anonymous Sun Apr 21 10:15:19 2019 No.10577392 >>10575761 Tag yourself, I'm SO(32) Heterotic

>>	Anonymous Sun Apr 21 11:34:45 2019 No.10577557 >>10577392 F theory isn’t on there

>>	Anonymous Sun Apr 21 11:52:55 2019 No.10577598 >>10577120 >>10577124 In that case what is stopping us from making experiments or measurements to determine the right topology?

Anonymous Sun Apr 21 12:03:39 2019 No.10577619

>>10577598
While discrete, there are so many of those topologies that we have still not identified one that perfectly replicates standard model. It is like looking for a needle in a haystack, to put it lightly.

There is progress happening but it is not a simple task.

>>10575761
>Has any other theory consumed so many geniuses without ever leading to anything?

No other quantum gravity theory or proposal came even close to what string theory has accomplished. They all immediately shit the bed. String theory is still not disproven after decades of research and has plenty of very interesting results. This indicates that we are on the right track, it is just a very complex and hard track.

>>	Anonymous Sun Apr 21 14:42:42 2019 No.10578013 >>10577619 Why would you do that? You need one that matches the real world perfectly, not another theory. The correct one will lilely differ slightly or in some aspects from it.

Anonymous Sun Apr 21 14:51:00 2019 No.10578037

>>10575761
I just want a physicist to explain why any of these crazy theories are worthy of spending their life on - as I understand it, string theory isn't experimentally substantiated, so what makes it such a convincing field to spend 40 years working in?

>>	Anonymous Sun Apr 21 15:45:11 2019 No.10578174 >>10575852 It could be useful you mean. Right now it's a fun math hobby.

Anonymous Sun Apr 21 16:01:38 2019 No.10578218

>>10578174
No, it IS useful. Our technology level needed to "experiment" with strings aren't there yet, it will take few decades at least for direct experimental data. However in the meantime, we use string theory to explain what's happening to the Quantum world and how its related to the relativistic world.

For current day, its a tool to solve the black hole problem where "physics break" talk is heard. In the future, new physics from black hole/dark energy will probably be the place where string theory would be explored.

>>	Anonymous Sun Apr 21 21:04:07 2019 No.10578973 >>10578037 It's simple: people don't want to die/are freaked out by existence.

>>	Anonymous Sun Apr 21 21:08:30 2019 No.10578982 >>10578218 You've described why it's useful for example, solving black hole problems. But why is that useful? Black holes are very exotic objects.

Anonymous Sun Apr 21 21:11:08 2019 No.10578988

>>10578037
It's quite simple, you don't even need science. Why do people buy lottery tickets? Just the probability of truly hitting it big just makes humans irrational. The mere probability of being the guy who invents the next GR tier physics masterpiece who will be put on a pedestal at the level of Einstein gets those physicists hard as fuck. And what is the downside if they fail? Nothing. They still got paid to do the research, and they racked up 500 publications to their name which means they get a 6 figure salary in somewhere nice.

The game they are playing is actually quite simplistic. Low risk, high reward.

>>	Anonymous Sun Apr 21 21:18:47 2019 No.10579000 >>10578218 How will you know it's accurate when you're talking about an unverifiable theory making statements about an unobservable condition? All you can say is "these equations are mathematically sound" until you get some experimental proof.

Anonymous Sun Apr 21 21:22:32 2019 No.10579012

>>10578037
Idk Im a math student with a recently found interest in mathematical physics. I dont really care if its empirically true because the math is interesting and illuminating, beyond just its applications to physics. It also unimaginably blows my mind that any of these structure even MIGHT be underlying our reality. The more and more I learn about the role of mathematical structures in the physical universe the more and more convinced I become that Plato was correct about the ultimate nature of reality and the forms.

>>	Anonymous Sun Apr 21 22:10:05 2019 No.10579112 >>10578982 >Black holes are very exotic objects. There are good arguments for the idea that we are living on the surface of a black hole.

>>	Anonymous Sun Apr 21 22:41:24 2019 No.10579199 >>10578982 Because understanding the nature of black hole might very well be fundamental to understanding the "big bang."

>>	Anonymous Mon Apr 22 02:20:59 2019 No.10579612 File: 583 KB, 1920x1920, 5544yr33rr3.jpg [View same] [iqdb] [saucenao] [google] >>10575761 Edward Witten. Something isn't right.

>>	Anonymous Mon Apr 22 02:55:23 2019 No.10579668 >>10579612 Holy...

>>	Anonymous Mon Apr 22 03:11:27 2019 No.10579701 >>10579612 I thought the M was for "martian"

>>	Anonymous Mon Apr 22 03:31:52 2019 No.10579722 >>10579612 Any theory with multiple extra dimensions is inherently not Jewish in nature. Multiple universes means God exists in one of them, therefore not Jewish.

>>	Anonymous Mon Apr 22 05:08:37 2019 No.10579839 >>10578174 >>10576858 >>10576853 Based. >>10577619 No it doesn't you unbelievably stupid retard. It just means that the theory is not even wrong.

>>	Anonymous Mon Apr 22 05:23:32 2019 No.10579871 >>10579722 >God exists in one of them. >God is Jesus. >God is a Jew. >God's chosen people. Annon...

Anonymous Mon Apr 22 06:26:03 2019 No.10579962
File: 5 KB, 358x278, 1437407393721.png [View same] [iqdb] [saucenao] [google]

>>10579112
>There are good arguments for the idea that we are living on the surface of a black hole.

Tourist here.
What the fuck? You mean our observable universe is riding on one gigantic, incomprehensibly humongous black hole?

Anonymous Mon Apr 22 07:01:30 2019 No.10580012

>>10579962

It's based on our study of black hole thermodynamics and information theory. We can describe the entire machinery of the black hole by studying its Event Horizon. This can be extrapolated to the entire universe by making it an holographic image projected over a 2D boundary at the infinite.

Anonymous Mon Apr 22 07:05:25 2019 No.10580018

>>10580012
>hologram theory

I've tried on like, 3 separate occasions to understand what the fuck that is about. I think it might be a topic you need a lot of prior knowledge to understand because I just go back to thinking "well I can see 3 dimensional so wtf"

Anonymous Mon Apr 22 07:06:00 2019 No.10580019

>>10579962

The holographic principle is a principle of string theories and a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a lower-dimensional boundary to the region—preferably a light-like boundary like a gravitational horizon.

The holographic principle was inspired by black hole thermodynamics, which conjectures that the maximal entropy in any region scales with the radius squared, and not cubed as might be expected. In the case of a black hole, the insight was that the informational content of all the objects that have fallen into the hole might be entirely contained in surface fluctuations of the event horizon. The holographic principle resolves the black hole information paradox within the framework of string theory.

>>	Anonymous Mon Apr 22 07:11:15 2019 No.10580025 >>10580012 >>10580019 So what implications does this have? That there is the "real" universe out there...somewhere?

>>	Anonymous Mon Apr 22 07:11:37 2019 No.10580026 >>10580018 https://youtu.be/Ab8JIzckx_M https://youtu.be/tJevBNQsKtU https://youtu.be/klpDHn8viX8

>>	Anonymous Mon Apr 22 07:12:56 2019 No.10580027 >>10580018 https://youtu.be/XxVlGAFX7vA https://youtu.be/0GLgZvTCbaA

>>	Anonymous Mon Apr 22 07:21:35 2019 No.10580043 >>10580018 Because we figured out that equations ysed in thermodynamics and the ones for the event horizon are exactly the same.

>>	Anonymous Mon Apr 22 07:33:03 2019 No.10580066 >>10580026 >>10580027 Ok I'll watch all this shit, but seriously pham we gotta find a way out of this universe.

>>	Anonymous Mon Apr 22 09:27:55 2019 No.10580261 >>10575852 AdS/CFT correspondence is simply an interesting mathematical exercise. It doesn't explain any existing physics or make any new testable predictions..

Anonymous Mon Apr 22 10:59:25 2019 No.10580488

>>10580261
it’s potentially much more important than that. the idea is that there might be some other way to better understand string theory in general, one that might lead to e.g. a nonperturbative formulation of string theory, which could be revolutionary

Anonymous Mon Apr 22 12:40:52 2019 No.10580782

>>10580488
> might lead to
*might* being the key word. It's like string theory / M theory or Super Symmetry. Mathematically elegant theories have either failed or are unable to make predictions. Physics is in a strange position right because experimentalists haven't discovered anything really new for a decade or two that the Theoreticians are going further and further up their own assholes in the name of beauty. The only exception I can think of atm is the Neutrino mass.

>>	Anonymous Mon Apr 22 21:18:14 2019 No.10582272 >>10575761 >so many geniuses

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