A generalized photon propagator
classification
✦ hep-th
keywords
generalizedpropagatorconstitutivephotonstandardconecovariantderivation
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A covariant gauge independent derivation of the generalized dispersion relation of electromagnetic waves in a medium with local and linear constitutive law is presented. A generalized photon propagator is derived. For Maxwell constitutive tensor, the standard light cone structure and the standard Feynman propagator are reinstated.
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