Transitioning from single-particle to many-body wave functions.
The seminal textbook Quantum Theory of Many-Particle Systems and the concept of the self-energy.
A comprehensive introduction to the formal language used to describe systems of identical particles. and the concept of the self-energy.
Before this text, Feynman diagrams were primarily the domain of high-energy particle physics. Fetter and Walecka were instrumental in bringing these visual and computational tools into the condensed matter realm. They provide a rigorous derivation of Feynman diagrams, Dyson’s equation, and the concept of the self-energy. and the concept of the self-energy.