Signals for Lorentz Violation in Electrodynamics

Details Signals for Lorentz Violation in Electrodynamics Signals for Lorentz Violation in Electrodynamics

2002-05-20

arxiv.org/abs/hep-ph/0205211v1

Phys.Rev.D66:056005,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages REVTeX

Scientific paper

10.1103/PhysRevD.66.056005

An investigation is performed of the Lorentz-violating electrodynamics extracted from the renormalizable sector of the general Lorentz- and CPT-violating standard-model extension. Among the unconventional properties of radiation arising from Lorentz violation is birefringence of the vacuum. Limits on the dispersion of light produced by galactic and extragalactic objects provide bounds of 3 x 10^{-16} on certain coefficients for Lorentz violation in the photon sector. The comparative spectral polarimetry of light from cosmologically distant sources yields stringent constraints of 2 x 10^{-32}. All remaining coefficients in the photon sector are measurable in high-sensitivity tests involving cavity-stabilized oscillators. Experimental configurations in Earth- and space-based laboratories are considered that involve optical or microwave cavities and that could be implemented using existing technology.

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