Deriving The QED Lagrangian | Quantum Electrodynamics

[@johubify]

Here after Andrew Dotson recommended your channel

[@DietterichLabs]

Cool, thanks for visiting!

[@bingodeagle]

wow, it's beautiful how simply that comes out, thanks for providing these videos on such rarely discussed topics on youtube

[@canyadigit6274]

Here from Andrew Dotson. Amazing channel!

[@vavila16]

I'll never understand this but, good to play in the background. 👍

[@CiroSantilli]

I managed to understand it partially after some effort: kzbin.info/www/bejne/f3e1qoFpm7aAhZo&lc=UgzNGkLXdwcSl7z8Lap4AaABAg

[@adityaprasad465]

@@CiroSantilli Your link just takes me back to this video.

[@SONGOKU-tl3ht]

Here after Andrew's recommendation

[@dyer308]

Here from Andrews recommendation!

[@DietterichLabs]

Where did he recommend me from? I couldn't find it. I'm just curious because it had a huge effect on my growth.

[@dyer308]

@@DietterichLabs Its mentioned in his community tab!

[@DietterichLabs]

@@dyer308 Thanks!

[@TenzinLundrup]

Thank-you! Do you know who applied Weyl's idea of local gauge invariance (originally conceived for GR) to what you have described. It's quite amazing. Was this idea around when Bethe, Feymann, Tomonaga, and Schwinger were working? Yang and Mills were apparently inspired by review articles by Pauli, so it's part of the history.

[@tanchienhao]

once again, just what i needed!!! tysm! and happy near year :)

[@DietterichLabs]

I'm really happy that these videos are proving useful.

[@canyadigit6274]

I’m ‘new’ to the Schrödinger equation so I just want to know this thing that has been bugging me for a long time. Say the wavefunction is Ae^ix(1-x^2). A= sqrt(16/15) Now when I apply the position operator, I get Ae^ix(x^2-x^4). What does this new value mean? What does it tell me? Also let’s say I get an exact value in -h/2m(second partial psi with respect to x) and V(x)=0, do I know just know what the Hamiltonian operator acting on psi is? In other words, say the second partial of psi is 7x^2 what would that tell me about the Hamiltonian operator? I know it’s a silly question but I’ve just gotten to Schrödinger equation solutions and I would really like to know the answer.

[@carmensolissanchez4022]

Au is the copple of fermions with electromacnetic field?

[@Dan53196]

One question and I hope you might be able to perhaps answer in a little more detail, but why exactly is the partial derivative not able to commute the local invariant version? You said It has to do with the fact that it’s a function of spacetime. Can you please elaborate on that I’d be very grateful 🙏

[@eheriton]

Andrew ! Thx !

[@muhammad.748]

What is the meaning of gauge?

[@SahilSahil-ig8ie]

Plz would u also make availabe of the pdf.Sir and i am thankful to urs tooo muccch ok sor thankx.

[@taw3e8]

Awesome channel! But firstly ill have to learn more basic material :( Dunno why i like wathing such videos

[@DietterichLabs]

Sometimes it's fun to watch science happen even if you are missing background. I have done that too.

[@cosmicnomad8575]

@@DietterichLabs It makes it so that when I actually get there I learn it much quicker and understand it better

[@nabeelakhter5799]

From Andrew Doston

[@MoleMoleMole3]

Andrew brought me here