Test of constancy of speed of light with rotating cryogenic optical resonators

الأصل · EN

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± 3± 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, |(κₑ₋)ZZ| < 2· E-14.