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Derivation · draft

Local U(1) Gauge Invariance Fixes the QED Coupling

Statement

Derives the minimal coupling and the photon field by demanding local U(1) invariance of the Dirac Lagrangian.

Depends on

Dirac Equation, Antiparticles and the g=2 Prediction, Noether's Theorem for Conserved Currents

Used by

PU-304/L25 PU-304/L26 PU-304/L30 PU-304/L31