A generalized photon propagator
arXiv:0705.0756 · doi:10.1088/1751-8113/40/30/F06
Abstract
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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- Photon propagator for axion electrodynamics
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