Q&A - Quantum Fields: The Real Building Blocks of the Universe - with David Tong

Ғылым және технология

What came first, quantum fields or the big bang? How can equation that we don't fully understand be written at all? David Tong answers questions from the audience following his talk. Watch the talk here: • Quantum Fields: The Re...
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According to our best theories of physics, the fundamental building blocks of matter are not particles, but continuous fluid-like substances known as 'quantum fields'. David Tong explains what we know about these fields, and how they fit into our understanding of the Universe. He covers topics from the Big Bang to the latest developments in particle physics from CERN.
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Пікірлер: 393

  • @Hyporama
    @Hyporama7 жыл бұрын

    don't believe ever watched a video where the presenter was so conversant and approachable in such an exotic subject.

  • @rebeccaerb9935

    @rebeccaerb9935

    3 жыл бұрын

    It definitely is exotic i would say! And yes i greatly appreciate his approachableness!

  • @luminousfractal420

    @luminousfractal420

    3 жыл бұрын

    rick mayal of physics. same energy

  • @georgepanathas2009

    @georgepanathas2009

    2 жыл бұрын

    Genius

  • @matthewking4098

    @matthewking4098

    4 ай бұрын

    Agreed

  • @m.j.9391

    @m.j.9391

    2 ай бұрын

    I wish he was my instructor when I was taking physics in college.

  • @user-yv8bw3zf6n
    @user-yv8bw3zf6n4 жыл бұрын

    Please more video content from professor Tong! He possesses the rare gift of radiating enthusiasm and excitement for things that are often left hidden away behind a wall of technical words, mathematical intricacy anda seemingly impregnable stock of foreknowledge! These videos and his lecture notes are golden.

  • @glenn-younger
    @glenn-younger3 жыл бұрын

    Who else is in love with David Tong's style? Bring him baaaaaaaack.... again and again, please.

  • @R0UTARAN
    @R0UTARAN7 жыл бұрын

    Why did this have to stop!! Absolutely fantastic lecture.

  • @davidchou1675

    @davidchou1675

    5 жыл бұрын

    Especially the Q&A!!! They're like the comments section of an online article or essay...or video!! XD

  • @MrBlue-km8qv

    @MrBlue-km8qv

    4 жыл бұрын

    David Tong seems very passionate about Quantum Fields. If the lumps of quantum fields truly do make up matter as we know it. it really does matter for the development of future technology like matter creation machine. instant cheese burgerz. yes, you can haz cheese burgerz little kitty. if you can press this button here.

  • @parapeciarz7472

    @parapeciarz7472

    Жыл бұрын

    @@MrBlue-km8qv except you can't create matter, it would violate the energy conservation principle. You can only change matter to energy and vice versa, but from einsteins equation we know that 1 unit of mass which is about one proton, takes 931 million electron volts of energy, and that's a huge amount

  • @meliacogan1586

    @meliacogan1586

    Жыл бұрын

    This is an excerpt. He does a very long talk on this.

  • @R0UTARAN

    @R0UTARAN

    Жыл бұрын

    @@meliacogan1586 Do you happen to have a link? I'd love to see more.

  • @robertschlesinger1342
    @robertschlesinger13424 жыл бұрын

    Excellent lecture and Q & A session. I look forward to more lectures by Professor David Tong.

  • @aby0ni
    @aby0ni4 жыл бұрын

    The humility of the lecturer is really something to behold

  • @matthewwheatley
    @matthewwheatley7 жыл бұрын

    Hey RI; thanks for the video. It would be great if when he refers to slides in the questions, or also in the main presentation with his laser pointer, that you put that fullscreen with the pertinent information underlined. Thanks

  • @tsamuel6224

    @tsamuel6224

    7 жыл бұрын

    I think these are recorded live and not edited. Using a high power laser (dangerous) pointer, mouse or joy stick pointer that appears on the screen goes a long way toward clarity. And then show the presenter the same screen you give us, so the presenter can't point at something we can't see.

  • @cnawan

    @cnawan

    7 жыл бұрын

    and replace the laser pointer with accelerometers, etc and have that talk to the laptop showing the slides and paint the pointer on the image itself. Then, once the undergrads have done that, spin the technology off as a company :3

  • @sekoivu
    @sekoivu4 жыл бұрын

    That's just amazing to see the intellectual excitemen of the David Thong. He's really encouraging young scientist. That's the way, that's the way!

  • @seatown2000
    @seatown20007 жыл бұрын

    Not to be an asshole, but is there a possibility in the future to see where his laser pointer is pointing? I love these lectures but it would help a dummy like me follow along lol. Thank you! It's been for a great privlage to watch these lectures!

  • @irtehpwn09

    @irtehpwn09

    5 жыл бұрын

    I found that infuriating too, i really want to know what he is pointing to, if he could instead isolate the part of the equation he is talking to and put just that up onto the screen it would be more clear to the audience watching online. Amazing talk, very grateful for it, but we viewers are missing those parts because we can't see the laser pointer.

  • @brinx8634

    @brinx8634

    5 жыл бұрын

    Folks round these parts don't take kindly to those usin words like infuriating. Y'all are just a li'l annoyed. Your effrontery is exasperating, and I am enraged!

  • @irtehpwn09

    @irtehpwn09

    5 жыл бұрын

    @@brinx8634 haha :D love it

  • @jamespresley7080

    @jamespresley7080

    5 жыл бұрын

    Tong is a master lecturer, behold and and appreciate.

  • @nilent

    @nilent

    5 жыл бұрын

    I too was discombobulated by this elementary incongruity, given the level of scientific brilliance being displayed that they haven't yet figured out how to use a laser that will show up on a video. Maybe anything that it would show in the video would have overcome the light making the image itself visible to the folks in the darkened room? I bet there is a way! : )

  • @davidchou1675
    @davidchou16755 жыл бұрын

    "Dust"...and the one guy in the history of the world who devoted his life to studying it, dashing the hopes of theoretical physcists worldwide!!

  • @kiswahilikitukuzwe2547

    @kiswahilikitukuzwe2547

    4 жыл бұрын

    That same guy that devoted his life to studying "the dust" also happens to be a theoretical physicist, I suppose. I am also wondering how big are these dusts; are they quantum mechanical dusts or classical dusts? In other words how large or small are they?

  • @gianlucanotarangelo3098

    @gianlucanotarangelo3098

    4 жыл бұрын

    @@kiswahilikitukuzwe2547 I'd say that "quantum mechanical dust" are particles, not dust anymore. Dust is dust, like sand grains

  • @michaelpatchett6982

    @michaelpatchett6982

    3 жыл бұрын

    Brian may the musician earned a PhD in astrophysics, and his dissertation was on dust particles in the universe well more within our solar system Which makes you think Queen: another one bites the dust Well looking for graviton ideas

  • @TheRetroEngine
    @TheRetroEngine2 жыл бұрын

    Came from the brilliant lecture and even his QA session works wonders. Going look around for more David Tong lectures. Pure passion and excitement. I flippin' love it.

  • @biketyson691
    @biketyson6915 жыл бұрын

    David Tong is the greatest speaker. Just amazing.

  • @daniellemorley6070
    @daniellemorley60702 жыл бұрын

    thank you , have listened to this lecture about 6 times over the last year as am not a physicist and have enjoyed immensely and its getting clearer and am able to absorb it more, wonderful, wish I had had more enthusiastic physics teachers,

  • @nancyjoseph9962
    @nancyjoseph99623 жыл бұрын

    David Tong is a good Speaker! Must appriciate his knowledge and confidence to explain such a complex topic...

  • @afifakimih8823
    @afifakimih88235 жыл бұрын

    I wish this Q/A session never end ...Excellent Q/A session by Dr.David Tong.

  • @Ginanity
    @Ginanity3 жыл бұрын

    What a wonderful speaker and topic. I love his style: friendly, direct, informed, but taking no prisoners :).

  • @thefilmcine
    @thefilmcine5 ай бұрын

    I know little about quantum physics, but dang, Prof. Tong managed to hypnotise me into staying the entire session, enwrapped, AND wanting it not to end. The man is fascinating, what more can I say!

  • @keepitreal2902
    @keepitreal29024 жыл бұрын

    Thanks for publishing this most enjoyable talk!

  • @AnthonyJones-zo7dy
    @AnthonyJones-zo7dy3 жыл бұрын

    As an observation - he would make a fantastic Dr. Who... and would probably be able to create his own Tardis and be able to put it in an old fashion British style phone both... Love his presentation and lecture... All the (continued) VERY BEST!

  • @AdamWoodhams
    @AdamWoodhams5 жыл бұрын

    Thank you so much for this lecture. Great speaker.

  • @adamcummings20
    @adamcummings206 ай бұрын

    This lecture was incredible. Had me captive throughout, you can feel the passion and enthusiasm radiating from David, and it makes me so grateful that my past self decided to take the right educational steps into pursuing a maths degree, studying quantum field theory. It's hard and painful, but hearing talks like this reignites my motivation. Thank you, David Tong, and The RI.

  • @cesarjom
    @cesarjom3 жыл бұрын

    Really like Prof Tong's answer that the solutions of QM equation are discrete but the underlying fields are themselves continuous. However there are many who would argue that our reality comes through in those solutions only, when we observe the system of QM states (collapsing to a single observable quantum state), and we cannot ever know the underlying continuous nature of a system much less our universe.

  • @michaelhuntley1660
    @michaelhuntley16604 жыл бұрын

    This guy is on top of his game!

  • @deltango12345
    @deltango123454 жыл бұрын

    I feel very lucky for getting to this video. Delicious stuff!

  • @avonsternen6034
    @avonsternen60343 жыл бұрын

    Thanks for the engaging discussion.

  • @twstdelf
    @twstdelf7 жыл бұрын

    Great talk and presenter!

  • @JayTee78NIN
    @JayTee78NIN Жыл бұрын

    I have found a new favorite physicist. This is a good day

  • @katakalyptica
    @katakalyptica2 жыл бұрын

    My compliments. Due to their engraved statement, every word and every term can be precisely understood. A pleasure to listen. The perfect didac-tics and presentation and the choice of location are superfluous to men-tion for tautological self-conviction reasons An original german speaking listener, Dr. Schwund. Thank you very much. Mein Kompliment. Aufgrund ihrer gestochenen Aussage lässt sich jedes Wort und jeder Term präzise verstehen. Ein Vergnügen, zuzuhören. Die perfekte Didaktik und Präsentation und die Wahl der Location erübrig sich ja zu erwähnen aus tautologischen Selbstüberzeugungsgründen. Ein original deutsch sprechender Zuhörer, Dr. Schwund. Thank you very much

  • @_beatnik5994
    @_beatnik59943 жыл бұрын

    i think i found this as the best lecture on quantum fields

  • @PleasestopcallingmeDoctorImath
    @PleasestopcallingmeDoctorImath7 жыл бұрын

    awesome timing thanks!

  • @cameronalexander359
    @cameronalexander3596 жыл бұрын

    Long Answer; Yes with an 'if' Short Answer; No with a 'but'

  • @jtorelli7341
    @jtorelli73413 жыл бұрын

    This is even better than the lecture!!

  • @larryeisenberg368
    @larryeisenberg3682 жыл бұрын

    Captivating! One thing, though, not mentioned are all the parameters to the standard model and how theories we have to derive them from fewer parameters. I guess that would probably take a series of videos and not just one.

  • @onebylandtwoifbysearunifby5475
    @onebylandtwoifbysearunifby54753 жыл бұрын

    He's possibly the best science presenter.

  • @GlynWilliams1950
    @GlynWilliams19507 жыл бұрын

    Very informative.

  • @sax1ize
    @sax1ize3 жыл бұрын

    Sire David Tong simply too class my favourite Professor!

  • @gabrieldakubo1317
    @gabrieldakubo13174 жыл бұрын

    Excellent Dave!!!

  • @charliee8531
    @charliee85314 жыл бұрын

    Really Great Lecture. I loved every moment of it. About that "Dust..." - Is this a new branch of big bang scatology? If so - I'm all in.

  • @joedasilva134
    @joedasilva1346 жыл бұрын

    Excellent video!

  • @TheEVEInspiration
    @TheEVEInspiration7 жыл бұрын

    I would have had a few interesting questions (as a nobody in this area really): 1. There seems to be only one generation of the Higgs field, has this anything to do with it being scalar...and if so, is that not a hint where the generations in other fields come from? 2. This interaction between parallel fields by various forces that too are fields, but connect them, has it a resolution and if so is there some sort of grid/alignment that affects the interactions?

  • @chetan5848
    @chetan58485 жыл бұрын

    6:37, Harry Potter has questions about QFT

  • @acrm-sjork

    @acrm-sjork

    3 жыл бұрын

    To be more specific that should be Harry James Potter-Evans-Verres

  • @chetan5848

    @chetan5848

    3 жыл бұрын

    @@acrm-sjork haha, a fellow Methods of Rationality fan! Yes sir, you are right!

  • @Thegmarc
    @Thegmarc3 жыл бұрын

    This talk did raise me a question: Is there any theory that specifically describes, or tries to, the way all fields interact with each other? We have intrinsic features of each field like spin and charge and magnetic moment, but can we consider then as manifestations of interactions between fields. Could we “dismantle” each feature and understand the fundamentals of their emergence?

  • @jerrykrampera8145

    @jerrykrampera8145

    6 ай бұрын

    Michael Faraday had it right . His Field the "Aether" composed of (Electro magnetic wave frequency range, from cosmic background/Radio to Visible Light, to Gamma, to Black Hole Singularity) got hijacked , Now Called Quantum field/foam/ Higgs field/whatever. All these other fields are only various manifestations/measurements of intrinsic features of Faraday's Field. Not separate fields but features of the one.

  • @jamespresley7080
    @jamespresley70805 жыл бұрын

    Finally honesty.

  • @ajklodhi
    @ajklodhi7 жыл бұрын

    thanks for the video

  • @shaktikc606
    @shaktikc6067 жыл бұрын

    thanks for the upload...........

  • @indiaview9414
    @indiaview94143 жыл бұрын

    There must be a noble prize give to that person who will solve that exponential terms including integration and other terms of that equation..

  • @jacksonpalmer9114
    @jacksonpalmer91142 жыл бұрын

    Fascinating. My understanding of Quantum Mechanics was that fields are generated by particles, not the other way around, but I suppose that's my classical training fighting modern Quantum understandings (or not understandings 😉 ). Also, QFT would better explain the particle wave duality concept with photons and merely just extend the scope to all fundamental particles. Makes sense. Anyway, I love Feynman and how genius he was in his way of describing incredibly complicated mathematics with squiggly lines and funny names. Truly a legend with a fantastic sense of humor and humbling understanding of the insane complexity of the reality of the world around us. God does indeed play dice...the next question is, I suppose, are the dice loaded? 😂 Anyway, thank you to the Royal Institution and all you do for science and scientific awareness. The Christmas Lectures are some of my favorite things to watch! ❤

  • @KulCulKan
    @KulCulKan6 жыл бұрын

    very good work

  • @bertpineapple3738
    @bertpineapple37382 жыл бұрын

    Excellent, my perception just went up up. David Tong is my new favourite science communicator. I wonder if he has a brother called Pete?

  • @pancakes3250
    @pancakes32504 жыл бұрын

    Wow, best so far. Heart of Britain

  • @joshuaentwistle960
    @joshuaentwistle9607 жыл бұрын

    This was a good one! He delivered his talk really well, and with obvious engagement with the subject. He's obviously a scientific 'radical', but someone has to be or there are no spikes on our sphere of knowledge to give us traction and keep us moving. We're not talking a flat-earther or a time-cube here.

  • @fuseteam

    @fuseteam

    6 жыл бұрын

    I was thinking according to relativity no frame of reference is "correct" hence the earth is round relative from space and flat relative from earth ;) -except it isn't since we see an approaching ship mast first-

  • @rohitchat5538
    @rohitchat55382 жыл бұрын

    I Got it and keys finall find from you ..Wonderful sir you are among millions sir 🙏🙏 Mr David tong and team word by word understood 👏👏 spectacular knowledge video leads directly like Rocket 🚀 like this was and is speed .. 👏👏

  • @ThePetretosh
    @ThePetretosh6 жыл бұрын

    I enjoyed watching. i got two questions 1) how do particle entanglement experiment fit in quantum field theory? 2) the force (if icall it so) that caused the big bang could it be the same force causing the universe to accelerate (dark energy)..... since no breaks have been applied to counter it so far. thank u

  • @photinodecay

    @photinodecay

    5 жыл бұрын

    Entanglement is a result of the integral and partition thingy that he didn't explain. :) From what I understand, the maths involved are easier to understand using quantum mechanics, however.

  • @fractalnomics
    @fractalnomics7 жыл бұрын

    09:30 "Is there anyone up in the Gods have a question?" that sounded funny. 'Yes!', said God. he he

  • @rajendrarajasingam6310

    @rajendrarajasingam6310

    5 жыл бұрын

    Can you explain how Self organising, self stimulating property can induce life like properties! Certainly a miracle!

  • @antoniomariamagenta8734
    @antoniomariamagenta87345 жыл бұрын

    Fantastic talk!! I have a question on the age of the universe: how can we discuss of the absolute time passed after the big bang if we know that time is relative, and depends on the speed of the observer?

  • @benradick1489

    @benradick1489

    17 күн бұрын

    The average density of the cosmos is approximately constant so clocks tick at the same rate for everyone (approximately)

  • @Drew-fb2gr
    @Drew-fb2gr5 жыл бұрын

    Shot in the dark, very very theoretical but still a serious question. We only discovered the Higgs field four years ago. Its theorized that there are fields of 'spiritual' origin that we are currently unable to detect. Would you, David, hypothesize that the field nature of quantum mechanics leaves room for interpretation of these 'spiritual' aspects to the universe that we seem unable to prove with modern science?

  • @nurealamchowdhury4143
    @nurealamchowdhury41437 жыл бұрын

    Brilliant

  • @RippleEffectProductions
    @RippleEffectProductions2 жыл бұрын

    You are one of the best i have ever heard. No match to your talk.

  • @trytwicelikemice7516
    @trytwicelikemice75166 жыл бұрын

    I have a question, for any of you geniuses out there :) From what I understand, light is simply another one of these vibrations, in the electromagnetic field. So is there anything special about the EM field that makes it's rate of propagation the fastest? Or is it the case that the speed of light is actually just the rate of propagation in all fields, but the photon is the only particle we know that has no mass, so is able to reach that speed? In other words, how does the speed of light (and if you really want to go for it, special relativity effects that go with it) fit in to all this?

  • @petertaylor4980

    @petertaylor4980

    5 жыл бұрын

    Any massless particle travels at c in a vacuum. Incidentally this is how we know that neutrinos have mass: we observe oscillation (neutrinos turn into muons and vice versa), so we know that they're not travelling at c (because then time dilation would mean that they were immutable).

  • @naphtali58
    @naphtali586 жыл бұрын

    Blue prints are prior to building ? Great talk ! Closer to reality !!

  • @arnorrian1
    @arnorrian14 жыл бұрын

    Does the positron have a field of its own, or does it share the field with the electron?

  • @theshermantanker7043

    @theshermantanker7043

    2 жыл бұрын

    That's the beauty of it: We have no idea

  • @ZacZabel
    @ZacZabel7 жыл бұрын

    I'm dying to see one these live. Maybe vacation 2020

  • @bhausahebkakade5676

    @bhausahebkakade5676

    4 жыл бұрын

    2020 is dead man

  • @helloimnisha

    @helloimnisha

    3 жыл бұрын

    Nah we don't talk about 2020 with hope

  • @raghav9o9

    @raghav9o9

    3 жыл бұрын

    Wait a min....who are you ? A time traveller...

  • @ZacZabel

    @ZacZabel

    3 жыл бұрын

    @@raghav9o9 I saw through the quantum field

  • @raghav9o9

    @raghav9o9

    3 жыл бұрын

    @@ZacZabel 🙃🤔😆

  • @whirledpeas3477
    @whirledpeas34773 жыл бұрын

    The beak on the first guy is award winning

  • @geroffmilan3328
    @geroffmilan33285 жыл бұрын

    It is a brave scientist that says "zero probability" on an emerging counter-intuitive piece of research. Just look at Einstein and Bhor and their antithetical views :) An excellent lecture on a fascinating topic, followed by a great Q&A. Thank you RI!!

  • @photinodecay

    @photinodecay

    5 жыл бұрын

    It's impossible according to the equations they use to assert it exists. Also, the force generated has always been within the noise levels of the experiments. It's smart to ask, but it's simply not relevant to this topic. This wasn't a lecture on how the scientific method works, but rather on a specific theory, and according to all known theories and all known models that make the universe understandable, that machine should not have the proposed and not yet measured. effect

  • @GuyLakeman
    @GuyLakeman4 жыл бұрын

    great lectures and Q&A now quantum waves (gravitons) have been detected by LIGO from the big black holes crash, when is part 2 ??? :)

  • @anugrahmathewprasad172

    @anugrahmathewprasad172

    4 жыл бұрын

    No, gravitons have not been detected.What was observed was classical gravitational waves. So, much like observing light, not photons.

  • @jesseaustin2438
    @jesseaustin24382 жыл бұрын

    David Tong is a great speaker because he has the intellect of a great theoretical physicicst. He illiterates way more complex stuff in his theories (most likely), and he is genuinely excited about what he is discussing. Like myself in my comments on this video and others. See my science stuff in my comments.

  • @jgottula

    @jgottula

    2 жыл бұрын

    Yeah, I was really struck with his enthusiasm and his excellent presentation. Now looking for more videos of him just because I loved this talk of his so much. 😛

  • @markedwardsuk
    @markedwardsuk7 жыл бұрын

    I had a thought experiment about the big bang, the big bang singularity is just like every other we see at the centre of galaxies, but with enough mass to create a universe, in my thought experiment, black holes are cold on the inside, but not absolute zero, until the mass exceeds a specific amount, the gravitational pressure stops vibration of energy at the centre, then cascading convection occurs in some catastrophic manner.

  • @petertaylor4980
    @petertaylor49805 жыл бұрын

    The equation has i sqrt(-g). Is there any reason that this is not simplified?

  • @angelinarobert622
    @angelinarobert6224 жыл бұрын

    With all the mass in the universe together. Would nt the universe be a massive black holes? Or would all matter become hyper compressed raw energy?

  • @BiopureNewsNetworkWashington
    @BiopureNewsNetworkWashington7 жыл бұрын

    Is the motion in the quantum field (inflation) has correlation with fractals? Madelbrot geometry?

  • @dewittcoppin9460

    @dewittcoppin9460

    4 жыл бұрын

    Great question...dont know the answer ...lol

  • @AlexStock187
    @AlexStock1872 жыл бұрын

    Answer to the first question, he refuses to accept granular reductionism. A man after my own heart!

  • @derekheuring2984
    @derekheuring2984 Жыл бұрын

    So what is anti-matter? If all particles are a simple ripple in the quantum field, is anti-matter a ripple with a negative or opposing amplitude that cancels the other out? If so, where does the intense energy emitted from the mutual annihilation come from? What causes the 'negative' ripple in the quantum field? I would have loved to ask this question.

  • @FajarSuryawan
    @FajarSuryawan Жыл бұрын

    My question: how does general relativity (spacetime curve, etc.) fit in? Great lecture by the way!

  • @antonioquesada-castro4925

    @antonioquesada-castro4925

    Жыл бұрын

    he desceibed it as in the gravitational field...

  • @alexandrugheorghe5610
    @alexandrugheorghe56104 жыл бұрын

    I'd like to see more physicists talk about entanglement and Juan Maldacena's work.

  • @rohitchat5538
    @rohitchat55382 жыл бұрын

    Wishing happy Christmas to all of you question and answer session I like the your theory of quantum field theory and it's relation with sir Albert Einstein theory of general relativity theory of quantum gravity ❤️🙏❤️ sir 👏👏👏👏👏 thank you so much to learn exciting intresting theory

  • @jackgoldman1
    @jackgoldman111 ай бұрын

    Does space hold the Universe apart, as it appears in the Field of Relativity OR does the space bind the Universe together, as it appears in the Quantum Field? Is this either A or B or is it both?

  • @williamsterben
    @williamsterben6 жыл бұрын

    Was hoping someone would ask if the standard model equation could explain the results of the double slit experiment. Or maybe that's a stupid question, or I missed something.

  • @sumsar01

    @sumsar01

    6 жыл бұрын

    You don't need as complex physics as the standard model to explain the double slit experiment. That experiment is much more insignificant than you think and is just a result of the statistical/wave properties of sub-atomic particles.

  • @thecuriousscientist1215
    @thecuriousscientist12153 жыл бұрын

    Is there something which interconnect all the fields???

  • @tarecho
    @tarecho4 жыл бұрын

    David, the Schrödinger equation is at best an incomplete, non relativistic description of reality and on top of that it predicts the quantization of many properties of the atom: Energy levels, angular momentum, etc... all quantized, discrete properties. There are more fundamental structures (yet to be properly described) underlying the reality of fields (and excitations): Spacetime cells, quantum gravity structures, the vacuum structure in general. It is too soon to know if these objects are discrete but based on the clues, many of us suspect they are.

  • @shadow_of_thoth
    @shadow_of_thoth5 жыл бұрын

    Yeah, but the Greeks were not *ALL* atomists. There were also monists, such as Anaximander who argued that, at the base level of all things, there is only one thing. Everything that exists is, at base level, the infinite and eternal in itself. This is referring to his concept of the Apeiron, the "unbounded" or "limitless," which is completely indefinite (or non-discrete, as quantum physicists might say; it does not have physical form of its own). It is from this Apeiron that opposites emerge, such as hot vs. cold, wet vs. dry, light vs. dark, etc. He also stated that everything is destroyed when it goes back into the Apeiron, such that in nature, there are an infinite number of "worlds" being created, but they are all destroyed again just as quickly as they are created, because the opposites come together, back into the Apeiron, which appears to be creating void, or what the ancient Greeks often referred to as "chaos." Essentially, to them, void and chaos were pure possibility, or potential, undefined and without form. Another pre-Socratic, Parmenides, literally stated that nothingness, or void, cannot exist. There is necessarily something, even in nothing, since either something does exist or it does not exist, but whatever exists cannot not-exist, and whatever does not exist cannot exist. So, existence itself exists. Therefore, it cannot not-exist. The nonexistence of existence is void. Therefore, no void exists. Essentially, that is what he argued. How, exactly, are either of them wrong, considering quantum fields? Obviously, Anaximander is using language that does not fit with the standard model, but the essence of his theory is that all things are one thing at the base level, but not at higher levels (those coming about due to opposites, like movement vs. no movement, heat vs. no heat, light vs. no light, ect.). The same is true of Parmemides; it is just that Parmenides says the basic essence to the universe is the "thing" of existence itself, rather than the Apeiron, or the "unbounded," as Anaximander says. They seem right, in a certain sense.

  • @nirvanayogi
    @nirvanayogi7 жыл бұрын

    I don't like the idea of a moment in time( the idea of a beginning of the universe) were t=0 . In fact when i imagine o.oooo etc . and i put as many zeros behind as the number of quarks that are present in the universe , then i could still write a 1 after it . so in my opinion there is no time=0 . It is in fact an asymptote , it nears infinitely close to 0 but it will never become zero .

  • @user-zh2hx6iu4r
    @user-zh2hx6iu4r Жыл бұрын

    My question :Is quantum fluctuation a fluctuation of energy? May the energy fluctuation cause the fluctuation of space-time curvature according to the Einstein field equation? The difference of curvature means the difference of gravity which seeds the formation of galaxies.

  • @BenTajer89
    @BenTajer897 жыл бұрын

    Who's the kid with the glasses who always asks questions?

  • @Xcalator35

    @Xcalator35

    7 жыл бұрын

    That's Harry Potter from Hogwarts.

  • @BenTajer89

    @BenTajer89

    7 жыл бұрын

    LOL! Totally looks like him doesn't he! I feel like we've watched him grow through the RI questions sections. Definitely a smart kid, although going to every RI lecture probably helps.

  • @codyquist4908

    @codyquist4908

    7 жыл бұрын

    It's funny because hes actually a wizard... Dont believe? do some research on the occult side of cern.

  • @Rhannmah

    @Rhannmah

    5 жыл бұрын

    A scientist in the making

  • @jamesmunroe6558
    @jamesmunroe6558 Жыл бұрын

    Unfortunately the speaker's references to "this" when cursoring over various parts of the equation aren't clear because we cannot see in the provided video which portions of the projector screen his pointer is moving over.

  • @xinyujiao4464
    @xinyujiao4464 Жыл бұрын

    Field + Dirac equation -> particles? Solving the Dirac equation gives the quantization? The quantization here is the number of particles.

  • @cmbates4053
    @cmbates4053 Жыл бұрын

    What does 10 to minus 33 sec mean in a quantum realm that is near the singularity?

  • @chattyadder2419
    @chattyadder24197 жыл бұрын

    "We don't really know if there is a 'before the Bang'. It's possible that Time started there. It's possible that there was a Time before. It's just beyond what we currently know." - David Tong.

  • @marcelweber7813

    @marcelweber7813

    7 жыл бұрын

    We should ask Chuck Norris.

  • @themikentimcomedyshow3343

    @themikentimcomedyshow3343

    5 жыл бұрын

    @@marcelweber7813 Chuck Norris caused the Big Bang when he was working out with his punching bag.

  • @TheProdigalMeowMeowMeowReturns
    @TheProdigalMeowMeowMeowReturns3 жыл бұрын

    What separates one field from another?

  • @badron8846
    @badron88464 жыл бұрын

    With that computer simulation of "nothing". I'd like to know to size or volume of space being simulated.

  • @AZ-vy4gl
    @AZ-vy4gl3 жыл бұрын

    Physicists can you please correct me in thinking the quantum field fluctuations could be the consciousness of nature. Could this be or am I inventing a psuedo science that can be proven against. Fascinating lecture and q & a thank you

  • @samimys6533

    @samimys6533

    2 жыл бұрын

    Based on my little understanding, if you bring the concept of consciousness among these so-called fields, it will no longer belong to quantum theories, rather being discussed in the field of metaphysics and philosophy, i could be wrong, but this is how I think it will be :)

  • @pratumnak
    @pratumnak7 жыл бұрын

    Brilliant........

  • @arunp5987
    @arunp59872 жыл бұрын

    are you familiar with a energy or power of G OD ?

  • @GamerShen98
    @GamerShen987 жыл бұрын

    What is the computer simulation of the fields describe? Is it matter popping in and out of existence?

  • @maxdecphoenix

    @maxdecphoenix

    6 жыл бұрын

    gamer shen according to Lawrence krauss, yes. Those are sub atomic particles flickering in and out of existence. Krauss universe from nothing series is good, but watch the older versions. After he became famous he became an unmitigated feminist apologist and injected Bullshit into his lectures. Then a few months ago he was accused of sexual harassment. Methinks he was trying to proactively buy sympathy because he knew he had some skeletons in his closet.

  • @photinodecay

    @photinodecay

    5 жыл бұрын

    It's not popping in and out of existence. It's just the fluctuations that occur in the quantum fields (I think he said specifically the quark field) when there is no "matter", meaning that there is no vibration applied to the field. It's just the way that it naturally fluctuates without external input.

  • @angelinarobert622
    @angelinarobert6224 жыл бұрын

    So is human level consciousness a Quantum Field? This would allow for ESP phenomenon like remote viewing, intuition, the ability to predict. Technical Intuition and New Thinking Allowed's KZread channel has more information on remote viewing. Dr. Peter Fenwick neuropsychiatrist extrodinaire might be interested in your research.

  • @philochristos
    @philochristos6 жыл бұрын

    I don't understand how quantum fields are consistent with string theory. Aren't strings discreet things? Are they spread out in probability clouds, or do they have discreet locations?

  • @sumsar01

    @sumsar01

    6 жыл бұрын

    It's the other way around. String theory has to be consistent with QFT. QFT is the most precise theory to date. If a string-theory can't reduce to a field theory it won't be valid. Also so far none of the experimental requirements for string thoery to be possible have been found in the places we would expect them to be.

  • @juanvga
    @juanvga2 жыл бұрын

    Im agree with the first question...

  • @SS-lp8fu
    @SS-lp8fu5 жыл бұрын

    I think there is alternative approach to looking at space-time nature of universe, What if time is not even a factor in this whole scenario. We are observing the hypothesis as an observant who is evolved in to take the time as discrete measurement unit. There are many persons living who does not perceive the nature of time at all. If we take from their point of view nature of events is as it is; the state of matter changes, What if gravity/strong/weak force influence the matter state change (accelerate/accelerate) in its own sphere so that it seems different to observer outside. We should look into effect of forces on matter change in different way rather than putting time into factor.

  • @Hexnilium
    @Hexnilium3 жыл бұрын

    My speculative hypothesis is that the quantum fluctuations power every subatomic and QM process. Essentially, time is measured by the quantum fluctuations, and then measured by subatomic processes. And gravity is less of a distortion of space-time, but rather a distortion of the quantum field powering it. In fact, I am in the camp that there's probably only one unified quantum field and this explains why time dilates at great speed or by large mass. My thinking goes that the energy required to manifest the phenomena that we eventually term particles at some level of abstraction is derived from the quantum fluctuations. But those fluctuations while seemingly random are occurring at a relatively uniform density in space. Therefore, as the quantum vacuum energy is utilized to manifest either large mass or to manifest mass at high velocity, it drains the available vacuum energy density in the localized/regionalized areas. That draining causes a perceived warping of spacetime, but the warping itself is an illusion. It's not actually warping, just the available vacuum energy density diminishes such that the subatomic particles and processes emerge spatially closer to more abundant available energy density. The small effect accumulates at scale to a large warping effect. Photons, massless particles, still require energy from the quantum vacuum to propagate, and thus their trajectories are bent towards more available energy. Gluons moving at great speed additionally do just the same, but because their path is chaotically confined, they just slow down relative to the rest of the universe in effect causing a cascade of every other subatomic processes to slow which appears as if time itself slows down. The gluons MUST slow because they must await the replenishment of quantum vacuum energy at the rate available despite the decreased density because of all the adjacent mass and subatomic activity draining it just as well. So, my idea essentially puts time into the conceptual bucket as being derived solely from the energy density replenishment within the quantum vacuum. It also sees spacetime distorting as just illusionary, when in effect it's actually the particles/processes bending as a result of a very slight energy thirst/attraction towards areas of space with a higher replenishment rate and available energy. And that if large amounts of mass or velocity (energy) can distort what we view as spacetime when using GR, maybe any large amount of energy such as heat, dense electric current, or luminous density could as well. It would effectively drain the well of available quantum vacuum energy enough to affect localized subatomic processes and thus distortion what we perceive as spacetime. A massive laser might be able to bend spacetime as just a massive density of photons, or using a laser to create a massive amount of heat to distort as well. The constant for the speed of light is really a reference to the rate of quantum fluctuations, or rather a measure of the universe's entropy with regards to the quantum vacuum energy replenishment availability. Time is derived from the vacuum. Just my thoughts. Still formulating it. I'm just trying to look at this from a different perspective. I had the idea for quantum fields before I knew what they were. I didn't believe particles exist. I felt like they were just like eddies in a turbulent flow of a quantum-scopic fluid. This is long before I started studying QM in better detail. So I'm feeling a bit lucky right now. If you have any ideas, questions, comments, or you can point out a flaw, please let me know.

  • @letsmakeamovie2037

    @letsmakeamovie2037

    3 жыл бұрын

    Be more mathematical. I think adjectives like thirst and replenishment are useless. If there is a mathematical formulation that works then that’ll become the theory we don’t need “reasons”. Yang mills theory is the conception to derive force interactions from the quantum vacuum fluctuation . It’s not an original idea, it’s yang-mills bro. I believe it’s considered the correct integral for describing all forces except gravity, the integral is just so hard we can’t solve the integral. And I believe with gravity, where the field is space time, it’s not even just that the integral becomes really really hard. It’s just the wrong integral because GR has rigidities like black holes that are just incompatible and produce infinities. With quantum gravity yang-mills may just have mathematical parallels. What’s going on is just the purely mathematical exercise of coming up with approximations that don’t produce infinities such as perturbation theory, Path Integral formulation, loop quantum gravity?, 2D Liouville field theory, etc…Again, all of which are just mathematical approximations to avoid infinities- OR there can be an attempt to change the entire formulation so that we don’t run info infinities and can solve the correct integral I guess. So this is Ofcourse string theory. I thing your naïveté can be summed up as why do you think string theory which requires 11 dimensions or whatever even exists. GR and time are empirically fundamental which is maybe surprising and just actually realize mathematics is a thing. I’m so confused r u studying QFT in uni?

  • @Hexnilium

    @Hexnilium

    3 жыл бұрын

    @@letsmakeamovie2037 I think String theory exists because physicists are having trouble looking at the experimental data and trying to reconcile it with their existing paradigm of particle and quantum physics. String theory is just a creative approach using math to attempt to describe it. I think it's honorable, but probably incorrect. I think physicists need to take a completely new look at everything and leave nothing to assumptions. Replenishment referenced the rate at which energy would bubble into existence and out of existence. If perturbations such as matter are draining the energy that popped into existence locally, then the quantum vacuum locally is truly void of everything. The idea would be that like the Casimir effect, gravity would emerge from this subtle spatial shift caused by mass creating a flow of quantum vacuum energy towards the large mass. Similarly, time itself slows down, but not the ticking of time, just every physical process above the layer of abstraction of the quantum vacuum energy. So subatomic processes would slow as they await the quantum energy to become available again, or rather the rate at which the energy pops into existence is constant but it gets utilized by matter at a faster rate which then must slow down and match the local rate. Denser matter requires more energy than the quantum vacuum produces per unit of (absolute) time, and therefore the matter itself slows down, all of the subatomic processes slow down. Cesium clocks, slow down. So there is neither a warping of space nor a warping of time, nor relative observers. There's just an absolute frame of reference and the relativity is an illusion produced by the rate at which quantum vacuum energy gets utilized by the matter requiring it faster than the quantum vacuum allows it to pop into existence.

  • @letsmakeamovie2037

    @letsmakeamovie2037

    3 жыл бұрын

    @@Hexnilium isnt that just called starting with Hilbert space. What’s the new idea? How is it original? Draining energy is synonymous with vacuum entanglement. Ok. Deriving relativity topology with entanglement is seriously popular already (the math isn’t understood though)

  • @Hexnilium

    @Hexnilium

    3 жыл бұрын

    @@letsmakeamovie2037 That there are no spacetime distortions. That they are illusionary. Relativity works like how Newtonian physics works, but it's incorrect.

  • @letsmakeamovie2037

    @letsmakeamovie2037

    3 жыл бұрын

    @@Hexnilium ok everyone agrees that relativity is wrong. So doesn’t everyone agree.

  • @andrewsparkinson1566
    @andrewsparkinson15663 жыл бұрын

    Interesting

  • @charlesgodwin2191
    @charlesgodwin21914 жыл бұрын

    It seems like the universe emerges from the vacuum. That moment would be a beginning. What if the vacuum is the continuum of being? What if the nature of Absolute Reality is to function/serve as a diversified unity (continuum of being) that actualizes as a unified diversity or Uni - verse?

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