这两张插图来自课堂讲稿，它们分别展示了(a)扭转的加宽图和(b)费曼图。（图片由Pavel Etingof教授提供。） Two figures from the lecture notes show (a) a Twisted-fat graph and (b) a Feynman diagram. (Images by Prof. Pavel Etingof.)
几何和量子场论课程是用泛函积分的语言对微扰量子场论的严谨的介绍，主要针对数学家设计。本课程包括了经典场论基础、自由量子理论和费曼图。课程的目标是用数学语言讨论一系列量子场论的基本概念和结果，使得学生通过所学足以懂得量子场论和弦论的报告和论文。 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.
