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.
20 Best Quantum Field Theory Books of All Time - BookAuthority
Per Sundell - Quantum field theory as a topological sigma.model
Algebraic quantum field theory - Department of Mathematics
Mathematical physics ANU Mathematical Sciences Institute
Mathematical aspects of QFT – RTG
Quantum Field Theory Princeton University Press
String theory and mathematical physics
The Mathematical Language of Quantum Theory
Traces in Number Theory, Geometry and Quantum Fields
The Bridge Between Math and Quantum Field Theory