Dirac Quantum Field Theory
A full lecture reconstruction on how the Dirac equation is embedded into quantum field theory through the Dirac Lagrangian, canonical momentum field, Hamiltonian, normal mode decomposition, fermionic quantization, and the resulting momentum and charge operators.
Introduction
The previous lecture derived the Dirac equation as a Lorent
A full lecture reconstruction showing how the Dirac equation emerges from Lorentz 2-spinors, how left- and right-handed spinors are related by derivative and conjugation operations, how the Majorana equation appears as the neutral case, and how the charged spinor field leads to the standard 4-spinor Dirac equation.
A full lecture reconstruction introducing classical Maxwell–Dirac theory from local U(1) gauge symmetry, deriving minimal coupling and continuity, and then motivating normal ordering and the nontrivial charge structure of the Dirac vacuum.