An EIT search for Lorentz violating signals

Abstract

A test of Lorentz invariance has been performed using an EIT resonance as a precision frequency discriminator within an Ives-Stilwell like apparatus. We analyse the experiment within the framework of the Standard Model Extension and have made the first direct measurment of the parameter ${\kappa }_{tr}<1.6\times 10^{-5}$.

Comments: 11 pages, 3 figures Minor corrections: additional references and correction to calculated value