Ultraviolet modified photons and anisotropies in the cosmic microwave background radiation

Abstract

We discuss a minimal canonical modification of electrodynamics in order to account for ultraviolet Lorentz violating effects. This modification creates a birefringence that rotates the polarization planes from different directions. Such effects might be detectable in the anisotropic polarization of the Cosmic Microwave Background radiation.

Comments: RevTeX, 4pp