Recent content by logos_spermatikos

Yes, it is is vector integration by parts. Here is resource about it which might be helpful to you: https://webhome.phy.duke.edu/~rgb/Class/Electrodynamics/Electrodynamics/node51.html? And making use of the fact that ## \vec{P} = \vec{r} ( \vec{P} \cdot \nabla ) ##

Indeed it is! I tried starting with Weinberg, who is brilliant, but I was jumping too far ahead. Now I am reading through 'QFT for the Gifted Amateur' by Lancaster and Blundell, and Zee's 'Quantum Field Theory in a Nutshell', which are about as friendly as I think real QFT can get.

HI everyone, I'm a student of Physics and Mathematics. I thought this would be a good online community to try to involve myself in. Currently I am teaching myself QFT, and I have recently been getting more curious about condensed matter. But I am still mastering some fundamentals! My hobbies...