PSI 2017/2018 - Quantum Field Theory II (David)

Path integral for a non-relativistic particle, Euclidean time

Operators and correlation functions in the path integral formalism, Thermal expectation values, Free scalar field

Propagator of the free scalar field, Correlation functions

Wick's Theorem, Quantization of φ4 theory, Feynman diagrams

Cancelation of vacuum diagrams, Structure of perturbation theory

Generating functionals

Effective action at one loop, Mass renormalization in φ4 theory

Renormalization of massless φ4 theory at one loop, Beta function

Renormalization group flow, Renormalization of massive φ4 theory at one loop

Wilsonian renormalization

Fermionic path integrals, Grassman variables and Berezin calculus

Non-abelian gauge theory