Physical Review Letters · 2007 · 186 citations · 34 references
Natural SciencesPhysicsCosmologyElectromagnetismMathematical PhysicsCosmic Microwave BackgroundCosmic Microwave Background ObservationsElectromagnetic WavesLorentz TransformationsQuantum Field TheoryRelativistic ElectrodynamicsCosmic Microwave Background AnisotropiesCosmic Microwave Background InteractionLorentz Invariance ViolationLorentz Violation TestsTechnical Violations
Possible Lorentz-violating effects in the cosmic microwave background are studied. We provide a systematic classification of renormalizable and nonrenormalizable operators for Lorentz violation in electrodynamics and use polarimetric observations to search for the associated violations.
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