Recent content by cordovan66

Thanks for the replies everyone - especially blechman and Joseph Butler. I've read and reread them over the past few days. While I still have some uneasiness about the subject, my understanding has improved a lot. We've just started Renormalization Group in class. Maybe I should first just...

I'm just learning renormalization in QFT and have a few basic questions: 1) It seems to me that renormalization has the status of a *prescription* for extracting a finite number from an infinite one. It cannot be justified except that this prescription leads to agreement with experiment. Is...