# Improved test of Lorentz invariance in electrodynamics

@article{Wolf2004ImprovedTO, title={Improved test of Lorentz invariance in electrodynamics}, author={Peter Wolf and Michael E. Tobar and Sebastien Bize and Andr{\'e} Clairon and Andre Nicholas Luiten and Giorgio Santarelli}, journal={Physical Review D}, year={2004}, volume={70}, pages={051902} }

We report new results of a test of Lorentz invariance based on the comparison of a cryogenic sapphire microwave resonator and a hydrogen-maser. The experimental results are shown together with an extensive analysis of systematic effects. Previously, this experiment has set the most stringent constraint on Kennedy-Thorndike type violations of Lorentz invariance. In this work we present new data and interpret our results in the general Lorentz violating extension of the standard model of particle…

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