Physics > Classical Physics
[Submitted on 26 Feb 2003
]
Title: A New Limit on Signals of Lorentz Violation in Electrodynamics
Title: 电动力学中洛伦兹破坏信号的新限制
Abstract: We describe the results of an experiment to test for spacetime anisotropy terms that might exist from Lorentz violations. The apparatus consists of a pair of cylindrical superconducting cavity-stabilized oscillators operating in the TM_{010} mode with one axis east-west and the other vertical. Spatial anisotropy is detected by monitoring the beat frequency at the sidereal rate and its first harmonic. We see no anisotropy to a part in 10^{13}. This puts a comparable bound on four linear combinations of parameters in the general Standard Model extension, and a weaker bound of <4 x 10^{-9} on three others.
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