Testing Lorentz Invariance Violation with WMAP Five Year Data

Kahniashvili, Tina; Durrer, Ruth; Maravin, Yurii

Testing Lorentz Invariance Violation with WMAP Five Year Data

Authors

Kahniashvili, Tina

Durrer, Ruth

Maravin, Yurii

Description

We consider different renormalizable models of Lorentz invariance violation. We show that the limits on birefringence of the propagation of cosmic microwave background photons from the five year data of the Wilkinson microwave anisotropy probe (WMAP) can be translated into a limit of Lorentz symmetry violation. The obtained limits on Lorentz invariance violation are stronger than other published limits. We also cast them in terms of limits on a birefringent effective photo "mass" and on a polarization dependence of the speed of light.
5 pages, references and discussions added, results unchanged, accepted for publications in PRD