Test of constancy of speed of light with rotating cryogenic optical resonators
arXiv:gr-qc/0504109 · doi:10.1103/PhysRevA.71.050101
Abstract
A test of Lorentz invariance for electromagnetic waves was performed by comparing the resonance frequencies of two optical resonators as a function of orientation in space. In terms of the Robertson-Mansouri-Sexl theory, we obtain $β-δ-1/2=(+0.5\pm 3\pm 0.7) E-10$, a ten-fold improvement compared to the previous best results. We also set a first upper limit for a so far unknown parameter of the Standard Model Extension test theory, $|(\tildeκ_{e-})^{ZZ}| < 2\cdot E-14$.
4 pages, 2 figures, accepted for publication Phys. Rev. A (2005)