# Whispering Gallery Resonators and Tests of Lorentz Invariance

@article{Wolf2004WhisperingGR, title={Whispering Gallery Resonators and Tests of Lorentz Invariance}, author={Peter Wolf and Michael E. Tobar and Sebastien Bize and Andr{\'e} Clairon and Andre Nicholas Luiten and Giorgio Santarelli}, journal={General Relativity and Gravitation}, year={2004}, volume={36}, pages={2351-2372} }

The frequencies of a cryogenic sapphire oscillator and a hydrogen maser are compared to set new constraints on a possible violation of Lorentz invariance. We give a detailed description of microwave resonators operating in Whispering Gallery modes and then apply it to derive explicit models for Lorentz violating effects in our experiment. Models are calculated in the theoretical framework of Robertson, Mansouri and Sexl (RMS) and in the standard model extension (SME) of Kostelecky and co…

## 66 Citations

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