15KiB, 372x372, IMG_20191211_071501.jpg View SameGoogleiqdbSauceNAO physics anon Anonymous Tue 22 Dec 17:38:56 2020 No.12495900 ViewReplyOriginalReport Quoted By: >>12496302 >>12496436 Guys I need help, I need to calculate a feynman diagram, a standard polarization bubble particle - particle. Does anyone here know a good book for begginers, besides Mattuck?