Quantum Fields: The Most Beautiful Theory in Physics!

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Arvin Ash

Arvin Ash

Күн бұрын

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BACKGROUND VIDEOS:
Basics of QFT: • QFT: What is the unive...
Quantum Gravity: • The Trouble with Gravi...
Basics of Quantum Mechanics: • What is Quantum Mechan...
QM model of the Atom: • The Quantum Mechanical...
Quantum Chromodynamics (QCD): • QCD: Visualizing the S...
CHAPTERS:
0:00 - Historical perspective of modern physics
1:50 - The advent of Quantum Mechanics
5:00 - The problems with quantum mechanics
6:52 - What is Quantum Field Theory?
9:25 - How QFT explains force mediation and decay
10:53 - How QFT is also incomplete
11:44 - The most beautiful theory in the universe!
12:41 - Further study with Brilliant
SUMMARY:
Quantum field theory or QFT is the basis of the best theory we have in physics today to explain nearly everything, called the Standard Model of particle physics. What is Quantum Field theory? Why is it necessary? How is it different than quantum mechanics?
Classical mechanics indicates that an orbiting electron creates electromagnetic radiation which means that it would constantly lose energy, and fall to the nucleus. This does not happen. Quantum Mechanics solved this problem by showing that electrons travel in quantized orbits at their lowest energy state, and that they do not orbit but exist as a clould around the nucleus.
In quantum mechanics, objects are wavefunctions described by the Schrodinger equation. The location of a particle is unknown until the moment of measurement. We cannot know where it is beforehand, only the probability of finding it at any specific location.
This is a great model but it also has some problems. First of all, quantum mechanics is not relativistic. It will give you the wrong result if the quantum object is moving close the speed of light. The practical result of this is that as it doesn’t incorporate a speed limit, the speed of light, needed to make causality work. It allows for two measurements to influence each other faster than light. This would mean that there would be some reference frame in which the future could influence the past, breaking causality.
A second problem with quantum mechanics is that it only tells you how a particle evolves over time. It does not tell you how it is created or annihilated. So it can’t account for things like beta decay, due to the weak nuclear force, where a neutron transforms into a proton, an electron and an antineutrino.
This is where quantum field theory explains things that quantum mechanics cannot explain on its own. So what is quantum field theory? QFT a mathematical framework that combines classical field theory, special relativity, and quantum mechanics There is a field for every particle of the standard model.
All of these fields extend out in all of spacetime. The fields are always there and exist everywhere including inside your body. Although they exist everywhere and you can’t see them, they are not nothing. They are teeming with virtual particles. These are particle-antiparticle pairs that get created and destroyed constantly.
We can visualize these fields as a kind of ocean. Just like the ocean always has some turbulence, the fields always have a kind of turbulence even in their ground state of minimal energy. This turbulence is due to virtual particle creation and annihilation. In these turbulent seas, if there is enough energy, a larger wave can be created which CAN be measured. These are the real particles.
Energy can be transferred between two fields via a mediating boson field. This is considered an interaction or a force. Matter particles can’t interact on their own without a mediating boson.
So while in quantum mechanics there is no way for the neutron to split its energy into 3 different particles - a proton, electron and antineutrino, in quantum field theory this can be done via energy exchange between the fields. Although the number of particles may change, the total energy is always conserved. In other words, the energy of the fields is the same before and after the energy exchange. So by having quantum fields we can mathematically account for and model creation and annihilation of particles, as well as the mechanism of force exchange.
#quantumfieldtheory
#QFT
The icing on the cake is that the theory is fully relativistic, and free of causality violations. But even this modification of quantum mechanics is not perfect. For example, QFT is still missing gravity. We do not have a quantum field theory for gravity. So even QFT which is extremely accurate for the forces and particles we know of in the standard model, remains as yet incomplete.

Пікірлер: 1 600
@SabineHossenfelder
@SabineHossenfelder Жыл бұрын
Best brief QFT intro I've come across!
@vaizerdgrey
@vaizerdgrey Жыл бұрын
Minimum
@saltycreole2673
@saltycreole2673 Жыл бұрын
So can this quantum field interaction account for entropy?
@jordanhowe2057
@jordanhowe2057 Жыл бұрын
Love these vids and yours Sabine!!
@sukruata4866
@sukruata4866 Жыл бұрын
If Sabine says this, I have to watch this video in every detail .
@alivohereiam3780
@alivohereiam3780 Жыл бұрын
Sabine your videos are amazing the same way!
@david_melech
@david_melech Жыл бұрын
My physics teacher once asked me where my home work was. I told him it was part of a home work field. With my home work popping in and out of existence almost instantaneously. And there always being an uncertainty of where the home work actually is. He laughed, and I got off easy that time.
@marekkawaler3291
@marekkawaler3291 2 ай бұрын
😂
@Fundawonder
@Fundawonder Жыл бұрын
The lucidity of your presentation and explanations makes what appears complex simpler to understand. Much appreciated!
@L2p2
@L2p2 Жыл бұрын
agreed !
@everythingisalllies2141
@everythingisalllies2141 Жыл бұрын
He would make a good used car salesman, able to convince the gullible of any nonsense. Which this all is.
@70AD-user45
@70AD-user45 Жыл бұрын
@@L2p2 Why is it nonsense?
@RajHearts
@RajHearts Жыл бұрын
@@70AD-user45 did I say it is ?
@GeezerBoy65
@GeezerBoy65 Жыл бұрын
Many real science explainers and demonstrators on youtube are excellent: Sabine, Sean Carroll, Don Lincoln, many others, and especially this channel should have several million subscribers. Arvin is a superb explainer with team behind him. This is like Feynman brought back to life. Not a single filler word and each thought leads to the next. And without silly sound effects. Superb.
@jbuckland2744
@jbuckland2744 Жыл бұрын
L l Q
@HkFinn83
@HkFinn83 Жыл бұрын
Meanwhile a bunch of wooo space is cool! channels with info from wiki have millions of views.
@ronjohnson4566
@ronjohnson4566 Жыл бұрын
filler words, almost instantaneously, the fields are everywhere (fields are planes/plains/2d surfaces of anything. if they are planes that mean, no 3rd dimension). if red fields are everywhere then that implies all fields are everywhere. greens, blues, yellows are everywhere. if everything is everywhere then any one of these particles could never be detected. they are part of everything else. but you say you can be observed. that is like saying adding colored dye to a clear glass of water, the dye goes everywhere. And I don't believe solutions like this decay and become an area of clear water and an area of pure dye. All this standard and quantum stuff could be true but the illustrations don't seem to match the storyo.
@dgsean9775
@dgsean9775 Жыл бұрын
Dude, this explanation is probably the best I have ever seen for QFT. Thank you
@L2p2
@L2p2 Жыл бұрын
yes sir !
@AsIfHeKnew
@AsIfHeKnew Жыл бұрын
Agreed : )
@KM-ns3ki
@KM-ns3ki 2 ай бұрын
What's blowing my mind is this video is basically particles explaining to other particles how particles work.
@baivulcho
@baivulcho Жыл бұрын
As always, Arvin makes a highly complex concept really approachable and brings it closer to our limited minds. Thank you for that, every time you create a new video I watch it with confidence that I will be able to grasp the concept behind it. The only thing that I know I will be missing by the end is simply more on the subject. It's like a window to a new universe which is shortly opened for us.
@fjdarling
@fjdarling Жыл бұрын
Certainly changes the way I think about Matter and Energy and their complex interactions. Thanks Mr. Arvin.
@Liamvanvugt
@Liamvanvugt Жыл бұрын
Hey Arvin, after binging all of your video's I have become so increadibly intersted in physics, you are one of the main reasons for me choosing to study physics. So I want to thank you for making seemingly impossible to understand subjects intuitively availible to all of us :)
@ArvinAsh
@ArvinAsh Жыл бұрын
Great to hear! Thank you. Welcome to the journey.
@i_am_dumb1070
@i_am_dumb1070 Жыл бұрын
@Arvin Ash sir 🙏 I suggest you to read about Advait Vedant which is very similar in concept to QFT
@RyuuOujiXS
@RyuuOujiXS Жыл бұрын
LMFAO! You got tricked by a fraud! This guys actually pretty stupid.
@Haagimus
@Haagimus Жыл бұрын
Beautifully described and edited video. This is a visualization that I have not seen before but it clicks so many pieces into place for me!
@while.coyote
@while.coyote Жыл бұрын
I can't wait until amplituhedrons get explained on this channel. You're so good at explaining!
@user-yg9zb4qi2g
@user-yg9zb4qi2g Жыл бұрын
With such an immaculate explaining method, we had no issues in understanding everything you explain to us ,, many thanks .
@laioren
@laioren Жыл бұрын
Another great video, Arvin! I also really appreciated your framework of using classical physics to "explain" electron behavior in an atom, and how that doesn't work, so it led to quantum mechanics. Like 99% of science communication is finding a way to make unintuitive concepts more intuitive for people, and I think using that historical parallel really does a great job of showing that we had a tool, it didn't work to explain this behavior, so we observed that behavior and it helped us create another tool, that then led us into that same situation again, and tada, QFT. Really well done.
@Chon2052
@Chon2052 Жыл бұрын
WOW WOW Mr Ash, Thank you for this videos! Every new video gets better and better! As i said before, i'm nowhere near of a physicist, but for the first time i feel i understand a little bit QFT! Please i hope people make your videos more popular and that you get to 1M subscribers soon! Thank you and your team!
@terrifictiger
@terrifictiger Жыл бұрын
Arvin Ash's videos make complex concepts so appealing and intuitive. Highly recommend this channel. Thanks so much Arvin
@L2p2
@L2p2 Жыл бұрын
i second that !
@eucariote79
@eucariote79 Жыл бұрын
i use this and pbs space time to get familiar with last science thoughts.
@Paul-fb1em
@Paul-fb1em Жыл бұрын
By far the best presentation of advanced topics I have yet to find. What a great job you do Arvin.
@enlilannunaki9064
@enlilannunaki9064 Жыл бұрын
Arvin, you are astonishingly good at what you do. Please never stop. Thank you.
@AsadullahSalim
@AsadullahSalim Жыл бұрын
Best visual explaination Arvin! QFT is beautiful and it shows us that at the smallest levels there is actually nothing. Just invisible fields.
@micronda
@micronda Жыл бұрын
That's incredible that the fields extend in time as well as space. The best news I have heard in the 13 billion years I have existed. Well done man!
@Big_Man141
@Big_Man141 Жыл бұрын
@uPtrade and fake reply
@everythingisalllies2141
@everythingisalllies2141 Жыл бұрын
do you also believe in Santa Clause? You seem very gullible.
@shawnscientifica7784
@shawnscientifica7784 Жыл бұрын
13.7 Billion* and honestly. We might be older.
@everythingisalllies2141
@everythingisalllies2141 Жыл бұрын
@@shawnscientifica7784 Or that story might be all guesswork, as we don't KNOW what happened in the past. We make assumptions. We cant even agree what really happened in WW2. let alone millions of years ago.
@micronda
@micronda Жыл бұрын
@@shawnscientifica7784 I remember when it was about 12 billion+. Each new space telescope puts years on my life!
@vincentjoyhere
@vincentjoyhere Жыл бұрын
12:40 - When he said “I find this to be beautiful” - his smile was one of the most beautiful, meaningful things I’ve ever seen. Incredible theory and incredible presentation!! ❤
@AdityaChaudhary-oo7pr
@AdityaChaudhary-oo7pr Жыл бұрын
What an amazing episode. Amazing visuals with outstanding explanation. 🙏
@Sidionian
@Sidionian Жыл бұрын
Did you eat your curry today my friend...
@AdityaChaudhary-oo7pr
@AdityaChaudhary-oo7pr Жыл бұрын
@@Sidionian yes bro 😀
@shreerenukaduttgovinda
@shreerenukaduttgovinda Жыл бұрын
These idiots are beliving it out now when our ancestors found it long time ago... Vasudhaiva Kutumbakam Whole world is one family 🥰
@milesdehart3125
@milesdehart3125 11 ай бұрын
​@uPtrade 😢
@chaminda2700
@chaminda2700 7 ай бұрын
Qft most closer lord buddhas talks
@GioFransesca
@GioFransesca Жыл бұрын
I just found your channel two days ago and I love it so much! I’ve watched tons and tons of video but yours is simply one of the best I’ve come across so far, you did a very wonderful job sir 👍🏻👍🏻👍🏻 Also, I’ve never seen a more beautiful segue to the sponsor bit of the video, very well done ♥️
@ArvinAsh
@ArvinAsh Жыл бұрын
Thank you so much!!
@frankf1095
@frankf1095 Жыл бұрын
What a great visual depiction and explanation. It's people like you who make this world a better place....well for me it is. Thank you! I am interested to know how the fields are interconnected with all time and every thing.
@protoword10
@protoword10 Жыл бұрын
The most beautiful explanation of QFT I ever seen! You are really awsome Arvin!
@yrazu05
@yrazu05 Жыл бұрын
the best visual demonstration and explanations of QFT I have seen. thank you.
@bryanchambers1964
@bryanchambers1964 Жыл бұрын
Great thing about physicists like you is they can step aside from the math and actually explain whats going on. An oft overlooked aspects of explaining physics. I'm a physics teacher myself and I teach this way also.
@creativesource3514
@creativesource3514 9 ай бұрын
Is it really possible to understand QFT/QM with maths? Even GR?
@bryanchambers1964
@bryanchambers1964 9 ай бұрын
@creativesource3514 If you believe it is, it is.
@creativesource3514
@creativesource3514 9 ай бұрын
@@bryanchambers1964 I'm a doctor. I was just asking as you are a physics teacher.
@wmpx34
@wmpx34 8 ай бұрын
@@creativesource3514I understand the basics of how an internal combustion engine works, but I couldn’t design and build one. That’s kind of like understanding this stuff in principle versus calculating all the wavefunction madness
@actsnfacts
@actsnfacts Жыл бұрын
Great graphics for the interaction and mediation between fields! Thanks again for the great content! See you in the next video, my friend!
@varunahlawat9013
@varunahlawat9013 Жыл бұрын
Thanksssssss Arvin sir! This is by far the best explanation of the boson(animation of matter interaction) I've ever come across!
@BrianSu
@BrianSu Жыл бұрын
Best video on QFT ever! The animations make it so so easy to understand!! 👍🏻👍🏻
@PauloNeto99
@PauloNeto99 Жыл бұрын
Amazing. Ill Watch ithis as much as necessary for complete understanding. TY very much Arvin !
@kevins9242
@kevins9242 Жыл бұрын
This is another excellent video! I appreciate your honesty in what can and cannot be explained… you are a true scientist.
@worldwidekeef
@worldwidekeef Жыл бұрын
This is a subject that I've been struggling to get my head around. This video really helped. Thank you!
@supremebeme
@supremebeme Жыл бұрын
sickest animation i've seen, sound fx are a bonus. amazing work
@dbirch001
@dbirch001 Жыл бұрын
Arvin, you are such a brilliant teacher. Love this.
@ashJayden06
@ashJayden06 Жыл бұрын
Arvin you are such a BRILLIANT teacher! Thank you for making and posting these here
@L2p2
@L2p2 Жыл бұрын
Thanks Arvin ! helps clarify the context. QCD, QFT, QM all very confusing concepts but you have clarified !
@AsIfHeKnew
@AsIfHeKnew Жыл бұрын
Could probably be that I finally understood this thing - on a basic level : ) Thanks for this great explanation!
@glyphix42
@glyphix42 Жыл бұрын
You are becoming my favorite over PBS spacetime!!! don’t get me wrong. I still love that show but I feel like your last couple videos, you have given me “aha" moments, both on explaining in a layman friendly way, but also love how are you tie it together with the we are all one thing!!! I always wondered if it was just me or if there were people who understood it much better than me who also got the feeling that the things we learn from quotum mechanics seem to jive with a lot of the eastern philosophy about we are one… you are the universe… etc
@0ptimal
@0ptimal Жыл бұрын
They do. And not just eastern philosophy. It reaches a point where you become inclined to listen and consider what older cultures have said. We tend to think the old ones couldn't possibly have any accurate concept of the fundamentals of reality, but ultimately science is only describing something that already exists, in order to understand it in a new way, but(apparently) it's not the only way. After all, there are many paths to a single destination. The curious part is how they figured some of these things out without science. Makes you wonder about the other things they've said that we haven't figured out or linked scientifically.
@jonturner1981
@jonturner1981 Жыл бұрын
Got a subscription out of me, one of the best I’ve seen on topic. Great work. Keep it coming.
@ISK_VAGR
@ISK_VAGR Жыл бұрын
Arvin as always a magnificent explanation.🎉
@macronencer
@macronencer Жыл бұрын
Thanks Arvin, I really enjoyed this one. The interactions between fields has never looked clearer to me. An anti-neutrino is just like a neutrino, except that the field's value "points the other way"... assuming that's accurate, it's a really intuitive way to think about it and helps a great deal.
@ArvinAsh
@ArvinAsh Жыл бұрын
Glad it was helpful! it's an approximate illustration.
@lime-ne1vo
@lime-ne1vo Жыл бұрын
Great presentation mi fren. You have a great way of simplifying complex concepts. Thanks
@shaguftanaz7647
@shaguftanaz7647 Жыл бұрын
Excellent. Written Statements according to the lecture and views are exceptional indeed.Expecting more and more videos.Thanks.
@PetraKann
@PetraKann Жыл бұрын
This particular episode is excellent. It reveals some issues with QM and Standard Model etc that are often not discussed. Refreshing
@sherifitzgerald6886
@sherifitzgerald6886 Жыл бұрын
This presentation made sense to me FINALLY! So cool to "get it" understood after much deliberation, studying, confusion, etc. Thank you Arvin. My world makes so much more sense . Love you too...
@ArvinAsh
@ArvinAsh Жыл бұрын
Wonderful! Thank you for the compliment.
@JoseLuisGarcia1234
@JoseLuisGarcia1234 Жыл бұрын
The imagery and visuals have helped me so much in understanding this complex topic, I love your final thoughts, they are poetic.
@jessjulian9458
@jessjulian9458 Жыл бұрын
You are the best teacher on u-tube. Thanks for sharing your knowledge and expertise with us. All the best to you my friend.
@babaali7050
@babaali7050 Жыл бұрын
Sabine and you are producing best quality content on physics on youtube. Love you guys.
@babaali7050
@babaali7050 Жыл бұрын
@@metruna he is doing great as well. But he is on more technical side. Whenever I need to get deeper insight I watch his videos. Thanks bro.
@fatefulbrawl5838
@fatefulbrawl5838 9 ай бұрын
11:44 Is exactly the reason I'm so into science and philosophy, to get that interconnectedness to all people snd things!🎉 #Spreadtheknowledge
@yolanankaine6063
@yolanankaine6063 Жыл бұрын
Incredible! Lovely explanation and first introduction to this channel.
@SLABpizza1
@SLABpizza1 Жыл бұрын
Great video! Watching the modeling of these standard model fields, or fields with energy excitations, can’t help but notice and consider the bending of the space. Like what gravity does.
@Levon9404
@Levon9404 Жыл бұрын
Mr Ash indeed, this was a beautiful explanation, finally our scientists getting the point, I truly enjoyed this explanation.
@AlphaGatorDCS
@AlphaGatorDCS Жыл бұрын
PLEASE do a video on Quantized Inertia by Dr. Mike McCulloch. It explains galaxy rotation WITHOUT the need for Dark Matter (mathematical fudge factor). It elegantly combines Unruh Radiation, Casimir Force, and Rindler Horizons to explain inertia.
@chrisriess1298
@chrisriess1298 Жыл бұрын
I second that
@tonywells6990
@tonywells6990 Жыл бұрын
Yeah another weird idea. Inertia caused by Unruh radiation with a temperature even lower than hawking radiation. And how would it explain the usual roadblocks to non-Newtonian models such as baryon-acoustic-oscillations, bullet cluster, dark energy and the large scale structure of the universe and how would even higher accelerations (eg. above 1000 times higher in the CMB era) fit with observation?
@michaelmcdoesntexist1459
@michaelmcdoesntexist1459 Жыл бұрын
Gonna share this to a friend of mine. Thanks Arv!
@rushleaming6183
@rushleaming6183 3 ай бұрын
Perect. Whenever I don't understand something, I come to Arvin Ash!
@spookyaction
@spookyaction Жыл бұрын
7:54 maybe there are a finite number of particle-anti-particle pairs in the universe and since they are together, they are undetectable but if you apply enough force, you can separate them.
@MommysGoodPuppy
@MommysGoodPuppy Жыл бұрын
thats how higgs boson was discovered right
@johnshep293
@johnshep293 Жыл бұрын
Incredible explanation of QFT. I find myself trying to imagine how all those fields overlap and exist at every pinpoint spot in space....deeper dimensions of the super small make my head hurt but I still want to have it make classical sense.
@steviejd5803
@steviejd5803 Жыл бұрын
I totally agree, at what point does the quantum become classical, mad, I have a hard time with this thought.
@alvindior5508
@alvindior5508 29 күн бұрын
Great video! It's intriguing to see how quantum field theory provides a more complete picture of the universe compared to previous theories. Thanks for making these complex ideas clear and accessible.
@ArtooX2
@ArtooX2 Жыл бұрын
I honestly love your videos. Thank you for all of it!
@NiceCleanGoona4549
@NiceCleanGoona4549 Жыл бұрын
This was a great explanation arvin 👍 What you explain at the end about everything being connected is what it feels like taking lsd or psilocybin. Maybe the path to discovering whats next is in our subconscious....to see/feel the unseen. Enough of my hippy rant, thank you for the video and the great visuals 😃
@bigfootsdecendant594
@bigfootsdecendant594 Жыл бұрын
I agree fully. Theres gotta be a connection with the brain and the universe.
@christ_ie3714
@christ_ie3714 Жыл бұрын
💖
@ariaprilambang289
@ariaprilambang289 Жыл бұрын
i don't quite understand the whole explanation. But somehow, feel the conclusion.
@roselienchen9886
@roselienchen9886 Жыл бұрын
Thank you for bringing up a holistic perspective in the end❤
@jacekszymala306
@jacekszymala306 10 ай бұрын
Z przyjemnością obejrzałem świetny materiał filmowy. Dziękuję też za tłumaczenie.
@alfadog67
@alfadog67 Жыл бұрын
Another wonderful learning tool! Thank you Professor Ash. At 10:01, you say that the energy transfers between particle fields happen almost immediately. Do we know how fast? Perhaps c, or the same speed at which entangled particles interact, or some other speed? I would love to see what these quantum field animations look like while collapsing the shared wave function of entangled particles 🙏
@ArvinAsh
@ArvinAsh Жыл бұрын
Yes, we can calculate how fast. Look up the Energy and time derivation of the Heisenberg Uncertainty Principle.
@Ammarsafwan7
@Ammarsafwan7 3 ай бұрын
@@ArvinAsh can you explain the mass gap problem? it's one of the 7 millineum problems. I'm 13 and interested in physic but it's kinda hard to understand
@dray7579
@dray7579 Жыл бұрын
Arvin can you show us how matter and energy stay together in these fields on a macro level. Like, how does our bodies stay together in the same way without morphing and changing within these fields. And if two or more people are standing together how would it look in the fields. I hope i explained myself well enough🤓
@ArvinAsh
@ArvinAsh Жыл бұрын
There is no matter. It's all energy.
@MarshmallowRadiation
@MarshmallowRadiation Жыл бұрын
Lots and lots of balancing of electromagnetic forces. Atoms repel, link together in molecular bonds, slide around, and influence each other. The reason you and everything in the universe doesn't just fall apart is because all the particles, atoms, molecules in your body interlock and attract and repel and move around in a way that creates what we perceive as solid structure. Think of how a pile of sand doesn't just collapse and roll away like a pile of marbles might, or how a bunch of tangled-up pasta is hard to untangle if it doesn't have any sauce. They're made of unconnected bits, but the pieces interact in a way that gives them shape.
@barryzeeberg3672
@barryzeeberg3672 Жыл бұрын
@@ArvinAsh I have had the same question as "Dray", but I can never get an answer that is explanatory. Can you expand on "it's all energy"? - this does not really answer the question in an understandable way (at least for me). So if we think we see matter, this is just a trick that our brain is playing on us? Or is it a matter of semantics? What we ordinarily call "matter" is perhaps "really" energy, but it is identifiable to us as "matter", distinct from what we would perceive as "energy". I think the real test of that theory (or at least of one's belief in it) is to not hesitate to commit suicide. That would just be the rearrangement of energy fluctuations etc in a quantum field.
@erikawanner7355
@erikawanner7355 Жыл бұрын
Matter “is” energy basically
@eds7033
@eds7033 Жыл бұрын
Matter doesn’t really matter. Strawberry fields forever!
@HontasFarmer80
@HontasFarmer80 Жыл бұрын
This is a really great illustration. IT drives home in a simple way that many of the "mysteries" of QM are solved by using QFT.
@ytusersumone
@ytusersumone 7 ай бұрын
Arvin Ash explains and visualizes things to the general public better than anyone I've come across. What a service to humanity, bravo!
@thesparetimephysicist9462
@thesparetimephysicist9462 Жыл бұрын
Very nice episode Arvin :-) My opinion is that the concept of separateness may be the most misleading concept we have in physics. It shapes our intuition and the questions we ask.
@susanbruce8974
@susanbruce8974 Жыл бұрын
We are extensions of each other in the most fundamental way. Slime-moldishy.
@ssep327
@ssep327 Жыл бұрын
Arvin! What is the spacetime itself made of? Thats i ve never seen anyone talking about. Please make a video about that . 🙏
@mikkel715
@mikkel715 Жыл бұрын
Surface of a hypersphere. Huge hypersphere..
@ArvinAsh
@ArvinAsh Жыл бұрын
That's a good question. Other than containing various fields, the actual makeup is not really understood. According to Loop Quantum Gravity, it is quantized. See my videos on Loop Quantum Gravity. But this is not a universally accepted concept.
@marishkagrayson
@marishkagrayson Жыл бұрын
What about the theory of entanglement forming the fabric of space time itself. Is this something you can delve into?
@Tsudico
@Tsudico Жыл бұрын
@@ArvinAsh If spacetime contains the various fields, and gravity is the curvature of spacetime, wouldn't the fields also be curved due to spacetime's curvature? Doesn't that incorporate gravity into QFT? Or is the curvature not big enough to be relevant at the scale QFT operates in?
@ArvinAsh
@ArvinAsh Жыл бұрын
@@marishkagrayson Yes, it's an interesting concept.
@michaelzoran
@michaelzoran Ай бұрын
QUESTION: How does Quantum Field Theory overcome the "Cause & Effect" problem associated with "information" travelling faster than the "Speed of Light" in reference to a particle with one "Up" Quark and one "Down" Quark? Remember, in Quantum Physics those two Quarks simultaneously exist as "Both" the "Up" Quark "And" the "Down" Quark until the exact moment of observation is made for a measurement. When an unobserved unit is separated by a great distance - such as two light years - this causes problems. For example, if the person at Point A observed that there was an "Up" Quark, it would mean the other Quark "instantly" transformed into a "Down" Quark at Point B that is two light years away. This means "information" has travelled faster than the "Speed of Light" - which should not be possible. How does Quantum Field Theory overcome that problem?
@cbalexander4444
@cbalexander4444 5 ай бұрын
Very brief, informative and extraordinarily helpful. Thank You! So many clips on science are far too wordy and unfocused. I don’t have enough time to struggle through them. Yours was right to the point described: PERFECT!!
@kingle8172
@kingle8172 Жыл бұрын
when there are quantized energy levels in wich the fields can be exited, how can the Energy distribute into a wave funktion? ( I know, its just the probability to find the quanta of exitement at the points in space time, but the wave ofprobability clearly interacts with itself)
@muahmuah4135
@muahmuah4135 Жыл бұрын
when energy is quantised, there is a specific value in which the energy distribution is allowed.. they borrow the energy created in the vaccume as stated in the video, but the total energy borrowed is so less that it is considered negligible but its there.... and as we know from Einstein energy mass equation it can be converted into one form from another but the total energy remains the same or elese it would conflict with the energy conservation law.In simpl word, otherwise it requires advance mathematics to explain it in detail... of how thery are exchanged and trust me you'll hate it, its really long and hard, it will give you nightmare, also you might have heard of the particle dual nature, its all from there
@DrDeuteron
@DrDeuteron Жыл бұрын
QFT doesn't really have wave functions, it has field operators. Most QFT calculations consider non-interacting initial and final states being linked by an interaction matrix (called the S-matrix). Also: the wave function is not just the probability of finding a quanta at a point in spacetime. QM is non-relativistic, so time is just a parameter, so its "in space". The schrodinger eq then describes the time evolution of the system. But the point is the wave function is a complex (as in real + imaginary parts) probability _amplitude_ ....very different from its square: the prob. of finding a quant at "x".
@MatthewSmith001
@MatthewSmith001 Жыл бұрын
Loved this video. Narrator spoke easily and confidently and made me feel like I'm not stupid for 14 minutes. Thumbs up number twenty-thousand-one!
@user-mz6pd3hp3s
@user-mz6pd3hp3s Жыл бұрын
Wow, the best ever lecture on QFT!
@DavidAllen_0
@DavidAllen_0 Жыл бұрын
What a beautiful explanation! This too, is my favorite theory and has been since 2017 when I first learned about it
@DanteGabriel-lx9bq
@DanteGabriel-lx9bq Жыл бұрын
I absolutely love the standard model, simple but complex, just genius.
@mitch_the_-itch
@mitch_the_-itch Жыл бұрын
I did too. Right up until they told me to ignore gravity.
@DanteGabriel-lx9bq
@DanteGabriel-lx9bq Жыл бұрын
@@mitch_the_-itch Who told you that?
@nilk961
@nilk961 Жыл бұрын
The best explanation about quantum field theory I heard so far!
@das_it_mane
@das_it_mane Жыл бұрын
Before I learned physics, I saw visions on mushrooms. After learning physics, I'm about 80% sure what I saw was something like QFT. Only a few things were different
@hielcioglu
@hielcioglu 4 ай бұрын
After watching over a dozen QFT videos, I think I finally got a picture 🎉Thank you!
@miguelcarvalho1422
@miguelcarvalho1422 Жыл бұрын
What a great video!!! What a beautiful conclusion!!!
@kkumar3538
@kkumar3538 Жыл бұрын
Please make a detailed video on string theory 🙏🙏🙏
@ArvinAsh
@ArvinAsh Жыл бұрын
I made two: kzbin.info/www/bejne/aZuugX2XYstmmbM kzbin.info/www/bejne/eqGpnaSZgtybaLc
@kpw84u2
@kpw84u2 Жыл бұрын
I think you have that backwards -- it is from fields to particles 🤷🏽‍♂️ ijs
@ArvinAsh
@ArvinAsh Жыл бұрын
Actually it's all fields. There are no particles. But our understanding historically has gone from particles to fields.
@kpw84u2
@kpw84u2 Жыл бұрын
@@ArvinAsh didnt mean to throw shade and you are right. QFT is great. It makes it all make sense. I sucked at chemistry until I got to QED. Then QFT took me to the next level. Chemistry is sill not my strongest suit but I enjoy how QFT makes everything waves... i think love operates kind of the same way. Though that would be a different realm of discussion.
@jonathanskube4365
@jonathanskube4365 11 ай бұрын
The connection is beautiful. We should all feel a sense of this and seek harmony. Well said!
@tonijevk
@tonijevk Жыл бұрын
Such a great video!! So QFT simplified in context of this video is just multilayered unlimited unified field playing, explaining itself to itself about how itself explains itself constantly with energy conserved. If energy is constant maybe in "bigger" smaller scale energy is just another layer of QFT.
@marymiller974
@marymiller974 Жыл бұрын
Dear person reading this You should be beyond proud of yourself to beyond a gazillion times and beyond that and beyond that and beyond that and beyond that and beyond that!😃
@tommylee2894
@tommylee2894 Жыл бұрын
One of the BEST...IF NOT THE BEST educational vids on such a Scientific topic. This channel and Arvin Ash NEVER disappoints! Carry on...as you were... Thank you Mr. Ash
@richardl.metafora4477
@richardl.metafora4477 3 ай бұрын
I’ve watched a lot of videos on quantum, but this is absolutely, hands-down, the very best.
@rashard4
@rashard4 2 ай бұрын
Took me an hr to finish this. Kept 'rewinding' till I was sure I understood a modicum of the concept before I advanced. 💜
@jezzamobile
@jezzamobile Жыл бұрын
Wow. Excellent explanation of the practically impossible to comprehend! Thankyou.
@robertpupo
@robertpupo Жыл бұрын
Thanks ArvinAsh for another brilliant narrative on the subject
@missmerrily4830
@missmerrily4830 8 ай бұрын
I love this. So clear! Thank you!
@TM-yn4iu
@TM-yn4iu Жыл бұрын
Beautiful, I believe, might be an understatement. I find this magical and peaceful. Thanks
@jameshagnerart
@jameshagnerart Жыл бұрын
Thanks for making this video! I enjoyed watching it
@interiordesigntfw9933
@interiordesigntfw9933 Жыл бұрын
Excellent explanation!! Well done Arvin!!
@vladvlog9677
@vladvlog9677 5 ай бұрын
Arvin is getting better and better in his presentations. Well done.
@MrMike0817
@MrMike0817 Жыл бұрын
as someone who just learns physics from tv, youtube and podcasts, qft has always been so confusing, magical and mystical but this video has helped me massively understand how it works
@LouMajors
@LouMajors 5 ай бұрын
You are the best physics teacher on the Internet by far you make everything so clear to the lay person so thank you very much and cheers!
@resnik20
@resnik20 Жыл бұрын
I get more excited when a new Arvin video comes out than I did with GoT! 🤓
@robertschlesinger1342
@robertschlesinger1342 Жыл бұрын
Excellent video, as always. Very interesting, informative and worthwhile video.
@Alyosha41
@Alyosha41 Жыл бұрын
Wounderdul épisode ! Between this ans PBS's Lagrange equation its been an amazing week for physic's fan!!
@chinhvd
@chinhvd Жыл бұрын
Thank you and your team for excellent work!
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