"Version: 20221001"--Title page verso.Includes bibliographical references and index.1. Introduction to quantum field theory -- 1.1. Natural units -- 1.2. The simple harmonic oscillator in classical mechanics -- 1.3. The harmonic oscillator in quantum mechanics -- 1.4. Photons -- 1.5. Paths to quantum field theory2. Quantum mechanics and path integrals -- 2.1. Classical mechanics and fields -- 2…
"Version: 20221201"--Title page verso.Includes bibliographical references.1. Gauge theories -- 1.1. Introduction to quantum electrodynamics -- 1.2. Abelian gauge invariance -- 1.3. Perturbative calculations at tree level in QED -- 1.4. Renormalization of QED -- 1.5. Compact Lie groups -- 1.6. Non-Abelian gauge theories -- 1.7. The Faddeev-Popov ansatz and gauge fixing for non-Abelian gauge theo…