Quantum Field Theory - DAMTP
6. Quantum Electrodynamics 124 6.1 Maxwell’s Equations 124 6.1.1 Gauge Symmetry 125 6.2 The Quantization of the Electromagnetic Field 128 6.2.1 Coulomb Gauge 128 6.2.2 Lorentz Gauge 131 6.3 Coupling to Matter 136 6.3.1 Coupling to Fermions 136 6.3.2 Coupling to Scalars 138 6.4 QED 139 6.4.1 Naive Feynman Rules 141 6.5 Feynman Rules 143
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