# Test of Lorentz invariance in electrodynamics using rotating cryogenic sapphire microwave oscillators.

@article{Stanwix2005TestOL, title={Test of Lorentz invariance in electrodynamics using rotating cryogenic sapphire microwave oscillators.}, author={Paul L. Stanwix and Michael E. Tobar and Peter Wolf and Mohamad Susli and Clayton R. Locke and Eugene N. Ivanov and John Winterflood and Frank van Kann}, journal={Physical review letters}, year={2005}, volume={95 4}, pages={ 040404 } }

We present the first results from a rotating Michelson-Morley experiment that uses two orthogonally orientated cryogenic sapphire resonator oscillators operating in whispering gallery modes near 10 GHz. The experiment is used to test for violations of Lorentz invariance in the framework of the photon sector of the standard model extension (SME), as well as the isotropy term of the Robertson-Mansouri-Sexl (RMS) framework. In the SME we set a new bound on the previously unmeasured kappa(ZZ)(e…

## 93 Citations

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