Lorentz Violation, Electrodynamics, and the Cosmic Microwave Background
arXiv:0804.0269 · doi:10.1142/9789812779519_0004
Abstract
Vacuum birefringence is a signature of Lorentz-symmetry violation. Here we report on a recent search for birefringence in the cosmic microwave background. Polarization data is used to place constraints on certain forms of Lorentz violation.
arXiv commentPresented at 4th Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, 8-11 Aug 2007