Two figures from the lecture notes show (a) a Twisted-fat graph and (b) a Feynman diagram. (Images by Prof. Pavel Etingof.)
Prof. Pavel Etingof
18.238
Fall 2002
Undergraduate
Geometry and Quantum Field Theory, designed for mathematicians, is a rigorous introduction to perturbative quantum field theory, using the language of functional integrals. It covers the basics of classical field theory, free quantum theories and Feynman diagrams. The goal is to discuss, using mathematical language, a number of basic notions and results of QFT that are necessary to understand talks and papers in QFT and String Theory.