New Article: Quantum Field Theory IV - Renormalization

I’ve posted a new article in the physics for mathematicians series . This one is on renormalization, and it forms the end of the main arc of the story I’ve been telling in the quantum field theory series. If you’ve been following those articles, I hope you find this one interesting, and I’d very much like to hear from you if you have any questions, suggestions, or corrections. I’ve been engaged in…