Course

The Cooper problem, BCS theory

Fermionic path integrals, Grassman variables and Berezin calculus

Stoner model for ferromagnetism, goals of the BCS theory of superconductivity, the Cooper problem

Wilsonian renormalization

Mean field theory, Hartree-Fock approximation, screening, Stoner model for ferromagnetism

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

Electron-phonon interactions, Schrieffer-Wolff transformation

Renormalization of massless φ4 theory at one loop, Beta function

Classical description of phonons, quantum theory of phonons, Debye model

Effective action at one loop, Mass renormalization in φ4 theory