How to Visualize Quantum Field Theory

Quantum field theory has made incredible advancements in physics and technology possible and is arguably the most successful theory in all of physics. But what exactly is it? How can we visualize a quantum field theory? Let's run some simulations to see how we can interpret this complicated subject in a simple way!

If you do cool things with the code, let me know in the comments! I would love to see it!

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[theprofessor]

you know... you're a classic example of "I learned this better on youtube then I did in class"

[PrettyMuchPhysics]

Amazing visualization! Really well done :D

[kasperosterbye]

I have seen many youtupes on QFT, but this one is clearly the most illuminating. In my minds eye I can see a two dimensional version, I can visualise the double split experiment. I can even imagine how different fields can interact and get boson like behaviour. Best!

[deepbayes]

One of the best vids I have seen so far on the topic. Thanks.

[yacinekunplays]

someone should reward this guy for such great animation and easy explanation

[TibraAli]

Amazing video. I like how you don’t get bogged down in mysterious statements about how QFT is the marriage of special relativity and quantum mechanics. I think more physical intuition is to be had from the condensed matter point of view.

[KB-vqli]

Holy fing wow.. some things just clicked in my head watching this. Thank you so much. I love this

[MM-eixv]

mind-blowing!
really amazing work, thanks for uploading

[leyasep]

This is an outstanding demonstration of a step-by-step emergence of behaviour from discrete elements, thanks for your work !
Oh, and sharing the code is the cake on the other cake :-D

[DotRibhu]

Awesome video. Finally some visual representation.

[BorisNVM]

This is the most intuitive idea i've ever seen. Congrats

[vanpersie]

Thanks a lot! I'm used to this theory from books but seeing how you applied this knowledge (e.g. propagators) in your code is really exciting. Keep it up!!

[Ryan_Perrin]

This is a great conceptual motivation for QFT

[JL-cyks]

I seen some videos about QFT and it was not very clear how exactly particles are viewed as field excitation, so I glad I saw this :) I hope more people in future will ask themself same question and with some luck end up here :)

[brightsideofmaths]

Really nice visualisation! I like it :)

[haushofer]

Great video. It would also be nice to see this kind of simulations for 2D fields instead of rings. Thanks for your great work !!

[ilkero]

Video went perfectly until you introduced discreet energy levels and probability at the same time. Would be much better if you introduced discreetness and showed its effects and then introduced probability and gave us a sense of how the probability is calculated. We went from "ok here are connected dots with springs" to "things are discreet in a way that we dont know and there is a magic proability" all the intuition went away.

[cesarjom]

The harmonic oscillators (HO) connected together in a circle (closed string) is a great visualization of how QFT works. You can imagine extending this to a 2D plane of HO joined together to show how a fluctuation may travel through the field (system of HOs) thus revealing the familiar particle representation.

[bob]

Very good video! I am taking qft right now and this touched on everything we’ve done so far but Noether’s theorem. Thanks for making this.

[kinnaa]

The simplest and awesomely elegant way the QFT explained. Thanks a bunch.