Why String Theory is Right
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- Äas pĆidĂĄn 6. 11. 2018
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Some see string theory as the one great hope for a theory of everything - that it will unite quantum mechanics and gravity and so unify all of physics into one glorious theory.
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Hosted by Matt O'Dowd
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Why has string theory been the obsession of a generation of theoretical physicists? What exactly is so compelling about tiny, vibrating strings? In our last string theory episode I talked about what these things really are, and covered some history. In short: the strings of string theory are literal strands and loops that vibrate with standing waves. Simply by changing the vibrational mode you get different particles - analogous to how different vibrational modes on guitar strings gives different notes. And, by the way, strings exist in 6 compact spatial dimensions on top of the familiar 3.
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The most consistently high quality / high information / highly illuminating physics videos on CZcams, I wish this level of free content was out when I was younger.
I wish my school gave me this kind of education growing up.
@@TheKotaCan they still don't, graduated highschool in 2013, i would know.
Ikr? I feel jealous of the current generation. I was fairly good at Math back in school. Had I access to videos like this back then I would have definitely pursued an academic route towards theoretical Physics or Math (shout out to PBS Infinite Series and 3Blue1Brown) instead of my current masters in finance.
I was thinking the same. If I would have just had the internet growing up! It came too late and the youth today just use it for social media and are not up for the Job, being drenched in Social Justice, so Sad!
me too...like [-87years] :)
Personally, I would like to see more peer reviewed evidence. Until then, itâs fun to think about.
You really are everywhere lol
Jesus Christ do you see my jerking off right now?
Jesus wants to see peer reviewed evidence. That's rich đđ
@@jmcsquared18 thats the joke
@Jesus Christ, all the evidence you need for string theory is in one book. Granted the book is made up of a bunch of other books but that's all the evidence you need.
And don't you dare say that's begging the question, I don't even know what circular reasoning is.
PBS Space Time: Why String Theory is right
Also PBS Space Time: Why String Theory is wrong
Schrödingers cat: and i thought i was weird
Would you feel better if they were called "Arguments for string theory" and "Arguments against string theory"?
Even more confusing is that the fact that both episodes exist just increases the probability that both contain high quality information.
They are both true...it depends on whether the particles moving or not lol booooooweeeeeoooooo *spooky noises*
He's just giving the arguments to make up your mind for yourself. All of this theoretical physics is designed to promote free thinking
I'm playing both sides so that u always come on top
"Quantum mechanics can't tell us if anybody cares"
This made me laugh out loud, it's was so perfectly executed.
Same! Hilarious
"The main job of theoretical physics is to prove yourself wrong as soon as possible." Richard Feynman
@Steven Moore Narrowing down possibilities, basically. Since there's nothing stopping you from making some truly outrageous statements, a lot has to be laid to rest asap, as to not have the entire discussion sailing away into absurdity.
Got to remember that, in science, a null result is just as valid and useful a result as any other.
I'm sure someone can put it more elegantly and precise, though.
Steven Moore if you can find a way to see why your wrong sooner, the sooner you can start on a new correct theory
Yes, assuming your theory is at least falsifiable.
It's the entire point of scientific method, Steven: not "to find what is right and enshrine it", but rather "to figure out which things are wrong, and mark them so future generations don't need to re-walk those same paths".
--Dave, and when EVERYTHING you know is wrong, somewhere you've missed something
That's the job of any discipline of science.
I'm actually intrigued with the string theory, but any time I think about it I still ear the sentence of R.P.Feynman:'' It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.''
but that's just science, Newtonian physics is technically wrong but it still has plenty of application, so could string theory.
We also canât test out anything in string theory.
But it doesn't disagree with experiment. It's currently untestable and neither agrees nor disagrees. But it is internally consistent and the best candidate for unifying all areas of physics
@@MrMultiMediat0r Exploding with self-interaction infinities is hardly what I would call "internally consistent".
Exactly! In a post above I describe Hafele Keating e periment which conclusively proves that space-time does not exist .. ,yet physicists just carry on with their mathturbation. Dumb bankrupt science that has abandoned the scientific method.
I feel like I need a PhD in all the PhDs to understand this
You don't. It's intentionally paradoxical.
Youâre not meant to
Once you get the first PhD youâll understand that youâre not supposed to fully understand this
I believe we arent the first suggesting it, symbols arround the world are also capable of leading you into that math, so no phd required - some greeks tho were takin potions of madness and other to find "truth". Its up to you guys what youÂŽll do with this.
It's just a bunch of math
the guy in the video: Schrödingers equation is the easiest one
me: starts sweating nervously...
I would like to see a video/series on the 4 alternative theories to string theory:
1. Loop Quantum Gravity
2. Asymptotically Safe Gravity
3. Causal Dynamical Triangulations and
4. Emergent gravity
It would be interesting to see what advantages/disadvantages each has in comparison to String Theory
dimensions
_"Chevron One, encoded."_
@@OpportunisticHunter I mean really if you think about it, quantum mechanics is a whole different dimension, whether it's the fields we cannot even measure, or the very nucleus of an atom. It will be interesting to see the unification of blackhole levels of gravity on a relativy scale to the quantum world and how a singularity can show the proof of that pillar of science.. crazy stuff..
don't forget quantum field theory
Yes, this please... There's this sneaking suspicion that modern physics may be shaking a fruitless tree with string theory, given how long we've been at it... With that said, even fruitless trees can be ultimately made fruitful in science, and the roots of science are fraught with this very same scenario. So, perhaps the most optimal path to finding the solution we seek lies in the less popular models. There's also that nagging question of whether we've even been blinded by our current perspective on physics and perhaps we're not looking at things the "right" way. So I say, for the sake of finding the shortest path, let's get people more acquainted with the alternatives to get more people trying different approaches!
Everything is vibrations , I really saw that while on acid
Maxim Bogdanovic off topic but Netflix has a great show about acid and psychedelics right now. If you ever did acid, you will love the Netflix documentary.
An Alternate Perspective yeah that was great
An Alternate Perspective also the first episode of midnight rendezvous they talk about psychs , you should check that out too :)
Itâs funny you say that, and perhaps you are being facetious, but I experienced the same thing while tripping in the early 70s. Everything in my field of view-my friends, furniture, trees-I perceived as bundles of vibrating strings. Along with that was what I might have called music, but it was more subtle than that. It was the most amazing and awe-inspiring experience Iâve ever had. I flashed on it many years ago when I learned about string theory. Obviously, the real strings are far too tiny to perceive and it was an hallucination after all, but I remember my being resonating with the universe and the experience-something that I could describe as a symphony in which I was an instrument-lasted for hours. It almost makes me want to go on another trip again just to go back to it.
On my first Trip, I meditated and saw a Torus. Before this trip, I didn't even know what a torus is and months later I accidentally found out what it is. I'm still a bit confused about the meaning of this. I tripped a good amount of Times but had just a few of these out-of-the-norm Visions.
me : I should sleep early tonight
me at 3am : why string theory is correct
I just wanna appreciate the fact that somehow this madlad always finds a way to Segway his script into the ending word "spacetime" EVERY. SINGLE. TIME.
SEGUE
Man I just noticed...he really does find space for that every time
TFW he says _spacetime_ mid episode and the episode ends early
Wtf Iâve never noticed that omg
OMG that joke at the end was the best physics joke in history. Possibly due to the flawless delivery. It's like the entire video was a setup in a serious voice for one single joke.
I am as much a comedian as I am a quantum physicist, but you sir, are both.
Ay ur a quantumn physicist? Did u watch ant man? Is it like that?
@@talhatariqyuluqatdis haha xD
That joke was savage!!
I didn't get to the end.
@@kingrobert1st I skipped right to the end.
It is said that papers in string theory are published at a rate greater than the speed of light. This, however, is not problematic since no information is being transmitted.
Geeks will get the joke.
I am sorry lol.
Most people who watched this video will get this joke...
But good joke!
Oooooof
That's a spooky reference!
Sick burn.
Hahahaha...look I'm laughing...I get the joke which means I'm a geek...hahahaha...I'm very smart, it's not just me saying that, my mother verified that fact independently.
I was very into physics, the universe, and cosmology in the 90s and 00s in gradeschool and college. If this channel had been around back then, I would have been OBSESSED. I'm subscribing right now!!
Instead, back then, we only had Kingdom Hearts Random Crap videos on CZcams
...Which was a great fun time, but it did not teach me about string theory lol
Watching tall Peter Dinklage explaining string theory just made my day
It feels right ... then again so do cheeseburgers
đ
@Texas Faggot
We have to exploit and kill animals for it and they are not healthy.
ggzh a Argue With Everyone but yummy
@brandi loveee They don't want to die. I also want to ask you, what is wrong with killing humans?
@brandi loveee Do you think killing other humans is fine when it isn't illegal?
That last bit, "Quantum mechanics can't tell us whether anyone cares"
Golden!
That got dark real quick!
Underrated
Actually, quantum mechanics forbids this
@@LuisSierra42 what part
I missed the part that explained why string theory is right.
Omg this noose theory is killing me.
You have to watch the "Why String Theory is Wrong" to learn the arguments for why it is right :)
@@allenrhoades8482 You advert machine.
Well I watched it and haven't found the argument. Seems to me like string theory is just beautiful, but we haven't discovered anything at all that could even suggest that it's correct.
@@ryanfoley2939 HAHAHAHAHA
... something about gravity
I love when they delve into the mathematics of quantum mechanics in this channel. Too many explanations are over-hand wavy on CZcams and this channel breaks that successfully. Even if I donât understand most of the equations being a freshman undergraduate, I can at least say âOh look that A term at 9:13 is something I saw in E&M, where curl A = Bâ
*_"Quantum mechanics can't tell us whether anyone cares."_*
Electroflame 618 hahahaha
But it can
In the scale of the universe nothing we do on earth matters in any way.
I knew a joke was coming but that line completely took me by surprise. I literally LOLed.
@@rfichokeofdestiny I knew it was coming and I still laughed. The deadpan of the joke did me in.
I absolutely adore this series. As an undergrad in physics, I find it difficult to find people describing advanced physics theories without either being overly qualitative and "pop-sci" or it going right over my head, but the level of these videos is just perfect!
be careful though, string theory is all based on celebrity 'science' . it is the biggest mistake in physics to date.
As a fellow physics undergrad, I completely agree! I feel that just because oh how classes are structured make it difficult to actually develop new ideas or analyze less popular ones while taking said class.
Well string theory has created good mathematics so even if it isnât the right physical theory it has helped mathematicians
@@IhateCCP I wouldn't be so sure just yet! What makes you so sure it's wrong? Much more promising that its rival theories IMO :)
No jobs in Physics. Make sure you learn to code, learn to use database packages, get online certification courses. If you can't put Tableau, Python, Java .... you won't find a job. PhD? Very competitive unless your grad work is with some world famous scientist. Good Luck
String theory: reality is basically music!
Tolkien: fffffffudge yeah!
And âhe devil was the Angel In charge of music đ¶&worship.... Jealously is a...........đ
@@jeremiahschaefer9771 I mean, he wasn't technically in charge of the music, he was one voice in the choir. A discordant voice, but a single voice all the same.
@John Bradey Birds certainly have a use for it. I highly doubt that nice patterns in the frequency and modulation of air waves is something only humans recognise :P
SpaceTime Guy: The Shroedinger equation is the simplest of these early attempts to understand [something or the other].
Shows equation.
Me: ummmm......... okey...... [mentally backs away from the equation].
Its really not hard, its difficulty varies from what you want to calculate. If you have a free particle with a certain polarization and want to see how its egeinstate evolves if you throw with through a polarizator you just have to apply the time evolution operator to the initial state and see how it evolves. Thats easy. Completely different is if you want to use it on the hydrogen atom for example, that requires a lot more work, the system is an interacting one (electron and neutron), you have a big ass hamiltonian with interaction term and spin contribution terms and gotta do some variable separation and using legendré polynomials. It can be as easy as a walk in the park as it can be very difficult and long
@@StefSubZero270 Flexin that knowledge aren t u?đ€Ł
@@bamb8s436 Without showing off - it's kind of true it's a lot simpler than it looks, in that all those symbols refer to variables, and then once you know them and plug them in, it's just all about following the order of operations, and solving the equation. If it had x's and y's rather than Greek symbols, etc., it would probably look simpler.
@@JET7C0 i m Greek so it would look simpler for me lol
â@@bamb8s436 Awesome. So for example letters like Ï in the equation stand for the wave function, but knowing what that is and how to determine it, plus what all the other variables stand for and actually mean, then how to determine their values first if necessary, plus knowing why/when you even need to do all this, etc., clearly takes a a ton of time (and often money for schooling, in the US at least), so it's hilarious to see someone act like that's common knowledge in order to show off and be all, "You just have to apply the time evolution operator if you want to know the particle's eigenstate DUHHHH" like any random person will then immediately understand, lol.
6:27 "Schrodinger's equation is the first and easiest example." I am getting out of here.
I wonder what kind of solution/value they get that tells them about extra dimensions? đ
i feel you buddy
Ight I'ma head out
I canât see you, so you have left and not left at the same time, or something.
I know, wrong thing, but shh
Dude, the fact that you can talk about this stuff and we can follow it, even if it's just the gist of it, is astounding. You are truly in the same league as Sagan, as a science communicator. Kudos! đđ
I agree. Just like Carl Sagan, he presents the purely speculative as though it's a known reality.
I understood everything up to the point where you said " string theory"
ha, I understood less, the intro says pbs digital studios and I have no idea what pbs stands for.
The elegance of this elegantly designed top-notch elegant video about the elegant elegance of string theory is one elegantly elegance on its own.
He did his best to explain but i have no idea what he was talking about.
Nah I think they just stopped trying to make it vulgarized. All their last videos are like that, they got lazy I think.
I don't understand it.
It would take 10 years of learning to know what he's talking about.
Is there anything practical coming from this knowledge?
e.g why does a neutron outside an atom have a half life of about 10 minutes?
Does string theory tell me why?
What I do like about string theory is that it can explain neutrinos -
perhaps they exist in other dimensions & that's why
they can pass straight through normal matter -
and also what about dark matter? - perhaps the same principle!
I'm not a theoretical physicist either but I understand what he's talking about because I've been following quantum physics for years. I've had to read and reread different explanations of these concepts which then builds up to videos like these which is when you'll be able to understand what he's talking about
@@Bobby-fj8mk i don't think neutron's disintegration falsifies string theory at all. if it did, anyone would use it as an argument against the hypothesis. Also, it's pretty naive to say it explains neutrinos going through other dimensions, that just sounds stupid. My hypothesis about neutrinos is that they are just so small that nothing can block it. They are like bullets - they are fast and small so they penetrate anything. Or like electromagnetic waves - some of them go through matter easily (I'm not saying neutrinos are waves... but they might be...). "Might" is a sad word overall...
@@hihtitmamnan - but why do free neutrons decay with a half life off 10 minutes?
Also - just saying that neutrinos are small & that's why they can travel through the whole Earth or even the Sun without
being stopped sounds more stupid than my theory of
them existing in other dimensions.
We're getting part by part string theory videos, you wouldn't imagine how many people have been waiting for that day we're so happy :D
LOLL'I579
Why should anyone be happy about videos about a mathematical cult, that has absolutely nothing to do with natural sciences and the scientific method, but is just kept alive for egoistical purposes, because people bet their career on something and now won't acknowledge that they wasted the majority of their career by betting on the wrong horse ?
String theory is a mathematical religion and exactly as scientific as e.g Christianity or Satanism: not at all. It even formally doesn't classify as a scientific theory at all. It's in principle scientific junk.
Our current level of understanding in theoretical physics is at roughly the same level as at the begin of the 1970s. This means roughly 50 years of scientific stagnation, which is mostly due to string theory. Waste all your resources and crap and and you won't get anything out of it. Continuing to do so would be incredibly dumb. But I guess this stupid idea will only be overcome after Witten's death.
And the argument "It's so beautiful. it must be true" can't come from real natural scientists, but at best from pseudo-scientists who believe they would be real natural scientists, but are in reality children playing with mathematics.
Imagine him not understanding anything he says. That would be so hard to do/learn.
đđđ
I ALMOST understand something in these videos once in a Weyl.
I lol'ed when I heard the word Gedankenexperiment in the end there...
As a German it's always funny to hears those radom words being used in English :P
meaning??
Thought experiment
Borrowed words can sound kind of out of place. Like how english doesn't have an original word for shadenfreude.
@@volbla wtf is a shadenfruede thingy
MZA Method Man, itâs German for the guilty pleasure you feel when something bad happens to people who donât just Google it.
16:36
Absolutely savage. I appreciate it when Matt works some snark in to these.
Thanks! Very good about the Schroedinger equation and local phase invariance!
I really like the ending. He actually had me following that
There is a very strong psychological effect when the last "... spacetime." is said in each episode. It's a perfect closure that makes you feel satisfied and happy for what we just experienced. Otherwise we'll be not able to feel the episode finished and we'll be all angry and upset because it had an end, and we all know there is no end for spacetime.
And zero evidence of a physical correlation of space and time.
@@autonomouspublishingincorp8241 time only exists when space is observed. If you need proof think of before you were born or when you sleep.
@@upgrade1583 To say time only exists when space is observed is to declare that anything not observed does not exist. Not only is that not scientific, it's straight up ignorant.
@@autonomouspublishingincorp8241 As if 10 billion years passed and here we are at the fun bit
â@@autonomouspublishingincorp8241night time traveller... lol
Am I the only who tought that string theory had been confirmed because of the title?
I thought, before clicking on the video, that the next's one title would be "Why String Theory is Wrong"
Yes
@@moraleja39 Me too!
Yes, if string theory was proved, weâd hear all about it in the news and everywhere, we would know the fundamental structure and mechanics of reality, thatâs sort of a big deal
Yes
Can you imagine god coding the universe. How many tries must have taken for it to run properly with no bugs.
He is God. Just one.
Elegant presentation. Inspiring.
Please do a video like this on quantum loop gravity. The idea of the quantization of space itself is facinating. It from bit.
@Arthur Holland
I'm just happy there are multiple approaches to tackle this problem. Even if string theory is 'wrong', some beautiful math has emerged from its pursuit.
I agree. I found Lee Smolin's description of some the concepts very fascinating, myself (in the book Time Reborn)
String theory has me in knots.
Relax, it's KNOT what you think, it's what you do.
Space tome does not exist according to Hafele Keating experiment ...yet physicists persist in their mathturbating ways. What happened to the scientific merhod?
@@TheSolarScience
What did Hafele do as an experiment, jump into a lava spewing volcano and nothing happened? You know Jim Carry the actor who had some kind of spiritual breakthrough and everywhere he goes now he says "None of this is real, none of this exists"? Now remember that false nuclear attack alarm in Hawaii a few months back, Jim Carry lives in Hawaii and he didn't act like none of this is real when that happened.
Right here now I'm typing in time and living in space, I don't see how such can be denied. How long did it take Hafele to reach his conclusion and how big was his laboratory?
Space and time might be the only thing that exists and the rest an illusion it created to entertain itself. Even projecting the existence of Hafele to deny its own existence was a big laugh around the non existent campfire. I have a theory, the moment time and space recognizes its own existence is the moment it will cease to exist.
I find all of this interesting and bizarre as can be. Animals might only live in 3 dimensions, because they can only recognize 3 dimensions doesn't mean the 4th doesn't exist. Here we are in full recognition of the idea of time, can fathom time, and wondering if it exists. Fathom isn't the right word, understand isn't the right word, what is the right word?
I wrote a song called, "I need a new theory". It sucks.
"Why string theory is right."
CZcams: Up Next - "Why string theory is wrong."
...by the same channel.
clickbait.
Thatâs science for ya, and itâs called string theory not string fact!
@@velocity1146 Actually you got it wrong because "string theory" is a misnomer. Properly, it should have been called string hypothesis. Theory in science is a hypothesis that is already proven (given information and instruments available at the time, it doesn't mean it's absolutely true, science doesn't make claims about absolute). In science there are no really such things as facts as 'new science' can invalidate 'old science' as it happened many times.
@@reav3rtm isn't something that's proven a law?
@@JonahNelson7 Yes and no. (scientific) law is just a brief description of phenomenon explained by (scientific) theory, in ex in a form of equation. Doesn't answer "how" and may be inaccurate just like the theory that proposed it. It's not stronger version of theory rather part of it. Theory says how/why it happens and is proven (but may be inaccurate/wrong in doing so) while hypothesis only speculates on why it happens. Hypothesis may propose own equations, but it needs to be proven and elevated to theory in order for these equations to become laws.
Scientific fact on the other hand has ever less detail but is not disputed or invalidated, it's description of phenomenon. In ex "every human on Earth surface and near enough above it experiences downward force" is a scientific fact.
5:00 if I put a pin in these world sheets, will that create a wormhole?
Will we meat Morgan Freeman on the other side?
Who knows ?
Matt, I have often wondered about those extra dimensions; do they need to be tangible in the way that up down, left right, and forward are? Or could they also be less tangible, like roll, pitch, and yaw that describe mechanical motion, but are not really dimensions per se. I'm not a string theorist, i'm just wondering if some of those extra six dimensions might describe the wave length, frequency, and precession of these strings... not actual spacial dimensions...
Your motion graphics designer left the tiltshift blur layer on for the whole video.
did he maybe want to apply it to the background only but he fucked everything up?
Yeah, lots of distracting blur on this video. Thought it was still 480p.
I can't stand Blur.
Or Oasis.
The entire genre of Britpop really gets on my nerves.
@Tom Golden But then will he become a god of a shrinking universe?
@Tom Golden Because the muscles in my legs are incapable of generating enough force for my body to reach escape velocity. Perhaps yours are strong enough?
That apple tree joke just made my day!
I'm dying LMAO
10:35 this would've been a way better logo for X.
Chill down guys, they will make future video, "why string theory is wrong"
1:53
They did. It also makes zero sense
GDI as in it alone doesnât or neither vids do? If the former Iâm sorry but string theory is pretty outlandish.
Love hearing about this, wish I could understand more of it as most of it goes over my head unfortunately.
I support string theory because it's funny to think that everything is made out of tiny Silly bands
That's about as good an explanation as the real physicist have.
This guy is so intelligent and brilliantly pedagogical in explaining these extremely difficult physics so that an interested amateur like myself has a chance of perhaps understanding small parts of it. I don't know his name but he ought to be a professor in theoretical physics at a university in Australia.
10:17
Matt, what happened to your voice?
Why does it sound like Electro Satan is grumbling in the distance?
I heard that too lol I was hoping I wasn't turning into a schizo
Whatâs really worrying is how few people noticed apparently
It made me wanna clear my throat
yeah, thats weird
Matt isn't human...
Does String Theory predict midi-chlorians?
no just predict sand....
Finally, we've got someone asking the REAL questions
Sure, since we have plenty of dimensions to work with. 1 for midi-chlorians and the force, 1 for datasphere, 1 for pineal gland network, 1 for rune magic, 1 for the elder gods etc.
worse. it predicts midi-locrians!
Let's see...
Force = mass * acceleration
Force sensitivity is proportional to midichlroian count
Life forms have midichlorians
Jar Jar Binks, Rose Tico and Admiral Holdo are all life forms
Oh no. Spin-off featuring an adventure centering around Jar Jar, Rose and Holdo confirmed!
"but that seems like a hell of an extra thing to add to make your theory wok", no more extreme or unusual than a "magical, mysterious" form of matter that is invisible and completely undetectable, and only interacts with our universe via gravity, or a "magical, mysterious" form of energy that is again undetectable and causes our entire universe to expand at an accelerated rate.
Extra dimensions don't strike me as that big of a deal.
That conclusion blew the mind of Schrodingerâs cat (the living one, that is)
đ
Until you check, the poor cat is... in a weird state of existence!
But wait, if quantum states collapse based on observation, isnât the whole thought experiment suggesting cats are not capable of observation, and thus collapsing their own quantum probability field or whatever?
A string theorist and a particle physicists walks into h bar.
The (bar)tender says "You're on the wrong quantum level, dudes.".
--Dave, on the way out, they fall down a step function
@@daviddelaney2407 it's irrelevant where I am lmao
The string theorist does and does not buy beer
Dirac's theory has so many _holes_ in it
Whoever gets the research grant pays the tab.
Yea but can the theory explain Diablo on a mobile ph.??? I thought not.
Don't you have a phone???
@@artking2220 and...
"Don't you have a cake???" --Marie Antionette
@@AnalyticalReckoner watching my Swedish boy figure.
@Manj Sher If you didn't get what i said, then you don't know all of the story lol Look it up. This monstrosity of a question came out on Blizzcon
The number of times you said âelegantâ I thought you were Brian Greene
4:47 String Worldsheet
That "Schrodinger's Cat" joke at the end gets me every time đ€Ł
Can we hav an episode on E8 lattice
What about loop quantum gravity though?
Carlo Rovelli has me questioning string theory a bit lately (along with the lack of findings of any supersymmetric particle partners).
@@BC-jq8fg No, but I happen to have read quite a bit on these subjects.
@@BC-jq8fg Who the fuck asks questions using a dot at the end of their sentence?
This is explained in a way that makes the hard to grasp string theory seem like a lot of shortcut guess work to make others work fit into a conclusion that seems neat.
I was totally excited about string theory, but it met with a catastrophic end for me when my cat, Schrodinger, stole the whole ball.
Can you guys make an update video about Oumuamua given the new findings?
@Jim lastname it's a cylindrical asteroid that flew past our sun on a parabolic arc and then accelerated out of the solar system with no evidence of it being a comet or solar sail.
At 8:42, you forgot the Laplacian in the Schrodinger equation. Also, the second equation doesn't have "an extra term", it is just the equation made from the Hamiltonian for a charged particle in electric and magnetic fields. The conjugate momentum is not the same as the conjugate momentum for a free particle. Also, I don't know what the sigma in that second equation is. So, why do we use the Hamiltonian for a charged particle in electric and magnetic fields? Is it just because that's generally what you use the Schrodinger equation to calculate?
It's Pauli's equation, basically Dirac's non relativistic limit. The sigma is the vector of Pauli matrices. I think it was developed by forcing gauge invariance on Schrodinger's and the new terms were identified with the EM field.
You can rearrange Pauli's equation to become Schrodinger's + a term that describes the Stern-Gerlach experiment (an interaction between the magnetic field B and spin matrices)
@@MrDunkelBerry How can it be a limit of Dirac's equation? What you are saying makes sense, but the Dirac equation is a four component vector equation, and Schrodinger is a scalar equation, so how does that work out?
Should it not be, " Why Strong Theory may be right" ? I find your blog very good and informative, top knotch đ
I have a question for Matt. I'm wondering: if you accounted for the vibrating strings within string theory not as 6 dimensions, but instead as three (which would kinda make sense for a vibrating string), then, when you graphed the 3 dimensions of particles with the 3 dimensions of space, wouldn't that give you 9 dimensions? Moreover, if you represent both space and particles on an x, y, graph (each as a single dimension on the graph) then you don't need a dimension to represent time, as time would just be movement of particles in space. I am just very confused as to why a particle would ever need 6 dimensions.
@PBS Space Time Matt you missed the perfect pun of using "this is a wild(weyld) one" instead of "a weird one" at 09:34 !
Oh man. That's brilliant. Dot org.
Is so sad when a meme is victim of abortion...
"Never made a testable prediction" genius
What I love most is when Philosophy and Physics mix!
The visualization you're describing is a common representation of string theory in popular science media and some educational materials. In these depictions, instead of a one-dimensional thread, a string is often depicted as a three-dimensional pipe-like structure extending into higher-dimensional space. This representation helps to convey the idea that the string is not a point particle but has some spatial extent
ChatGPT
I think you're missing the Laplacian in the Schrodinger equation Hamiltonian
They do. Great content anyways :)
Bode's Theory for predicting planetary orbits was simple, beautiful, and elegant. Until Neptune . . .
I love this channel, I just wish I could understand more that the quarter to third of the material that I do.
Honestly, I don't understand half the things you say but its really facinating
I just catched the joke at the end, this is indeed brilliant đ€Ł
Thanks for the info, normal-sized Tyrion Lannister.
Love the dry sense of humo(u)r like the mime in the box.
These vids have got my mind rolling. I know I'm just a wee layman. New to science, thanks to space time. Things with viscosity. When you stretch liquids with volume (not sure if I'm getting that correctly) you get strings of that volume. It would seem to me that the volume of the universe would do the same. I think both loop gravity and string theory might make up a unified theory. Could be wrong but my Astros just went down two games in the WS.. my mind is searching for answers đ€Ł
The best thing about string theory is imagining God as a guitar player creating some sick riffs.
nah, it's the devil that plays guitar!
@@derekscanlan4641 What?! I challenge you to a rock-off!
@@yaldabaoth2 Oh, here we go...
"I'm the Devil, I love Metal!"
"Check this riff, it's fucking tasty"!
stick that in ur google and search it!
I've been in the God head, with the real life red pill DMT. Reality is 12 dimensions and everything is vibrating energy. String theory is just a simplified version, it's not strings but balls of vibrating energy. String is just a 2d slice, so not the true picture.
So with special modes of vibration, maybe? Including 'zero' modes?
I watch these videos to humble myself.
I comment to make sure people know how humble I am.
They make them to humble themselves 20 years later.
Each string vibrates with individual awareness!
The background is soothing in the eye.
If String Theory is so close to theory of everything, what it tells us about Dark Energy and Dark Matter?
lol nothing at all: the universe is still mostly Dark, sadly.
might not be to real the small and the big dont math and the small needs the big and viceverse.
String Theory is late 21st century physics that accidentally fell into the 20th century.
and I am a stupid know nothing about science that accidentally fell into a string theory video
I don't remember who said it. Was it Polchinski?
@@aayusharya6899 It was Edward Witten.
@@ramirolopezvazquez4636 No, it was Daniele Amati, Witten just agreed that it was a wise remark.
On some page about Ed Witten, you'll see
"1. Quotes
In Nova interview 2003, also American Scientist Astronomy Issue 2002:
Back in the early â70s, the Italian physicist, Daniele Amati reportedly said that string theory was part of 21st-century physics that fell by chance into the 20th century. I think it was a very wise remark."
@@aayusharya6899 Right. Thanks for the clarification :)
Why string theory is right : Because it ties it all together !
String theory is a theoretical framework in physics that aims to explain the fundamental forces and particles in the universe. While it is an intriguing and mathematically elegant idea, as of my last knowledge there is no experimental evidence directly supporting or confirming string theory. It remains a topic of active research and debate within the scientific community.
You know, we really should care what fate befalls Schrödingerâs mime. Why? Because a mime is a terrible thing to waste.
Why String Theory is right but has never been right.
It looks like string* theory in superposition state, right and wrong and the same time ;)
String theory was used by Leonard Susskind to resolve the Black Hole Information Paradox.
Susskind papers 100% prove otherwise. You are uneducated.
Not bad Susskind. But we need a better understanding of entanglement too - and how it relates to both black hole mouths, and holographic principle.
@@chrissonofpear3657 I'm guessing you're familiar with the ER = EPR hypothesis and have seen Susskind's lecture "QM=GR" ?
these videos are terrific for showing people who think they understand modern physics that they in fact do not understand it at all. the mathematical background you would need to understand what is being said (and not be kidding yourself) is seriously vast.
A bit of layperson speculation here. Could the higher curled up tiny dimensions of string theory be correlated to the different fields that permeates space time? In other words could the fields actually be made of the tiny curled up dimensions?
I'm so glad this video notification showed up in my local space-time
Well, if itâs true that two entangled particles interact across distance, it might make sense that there are more dimensions, on at least one the particles are actually touching each other, being far away in the 3 we perceive đ€·đŒââïž
A very small transient point particle called a gravaton might be what particles are made of and every other force might have an underlying gravitational model. Sort of have way between a string and a point particle.
I would love a video of Matt and Brian Greene discussing about string theory
i knew the universe was made of spaghetti
mmm.... spaghetti!
Don't you mean made by (flying) spaghetti?
the flying spaghetti monster!!!! be afraid, be very afraid!
All hail the FSM!! R-amen!
the flying spaghetti monster may be real after all!
Love me a video on topology... I mean 'physics'
4:48 had me cracking up because it sounded like "WORLDSHIT". Much love to this channel!
I think the answer to the last question @ 16:03 is the best part of this and it earned my thumbs up.