# Electrodynamics with Lorentz-violating operators of arbitrary dimension

@article{Kosteleck2009ElectrodynamicsWL, title={Electrodynamics with Lorentz-violating operators of arbitrary dimension}, author={Alan Kosteleck{\'y} and Matthew Mewes}, journal={Physical Review D}, year={2009}, volume={80}, pages={015020} }

The behavior of photons in the presence of Lorentz and CPT violation is studied. Allowing for operators of arbitrary mass dimension, we classify all gauge-invariant Lorentz- and CPT-violating terms in the quadratic Lagrange density associated with the effective photon propagator. The covariant dispersion relation is obtained, and conditions for birefringence are discussed. We provide a complete characterization of the coefficients for Lorentz violation for all mass dimensions via a…

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