Lecture 01: Introductory words; using a model of a crystalline solid to discover QFT

Lecture 02: Discovery of Fock space

Lecture 03: Scalar field theory (with some extra adjectives)

Lecture 04: Quantization of the radiation field by analogy; Noether's theorem and its converse

Lecture 05: Casimir effect; fields mediate forces

Lecture 06: Fields mediate forces; Wick rotation and time-ordering

Lecture 07: Big picture recap; Feynman diagrams in 0+0-dimensional QFT

Lecture 08: Lorentz invariance and causality

Lecture 09: Path integral subtlety; propagators; where is single-particle QM in QFT?

Lecture 10: The S-matrix and Dyson expansion

Lecture 11: Wick's theorem; time-ordered Green's functions and diagrams

Lecture 12: The exponentiation of the disconnected diagrams

Lecture 13: The LSZ reduction formula

Lecture 14: Observable physics from the S-matrix

Lecture 15: Observable physics from the retarded Green's function; Group theory

Lecture 16: Representations of the Lorentz group on fields

Lecture 17: Spinor Lagrangians

Lecture 18: The quanta of a spinor field are fermions

Lecture 19: Scattering of fermions

Lecture 20: Vector fields and gauge invariance