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

est order in uv Wu / c0 as csf , vd / c0 =1+ sv 2 / c0 dfb ˛ a ˛1+ s 1 ˛ b + ddsin 2 fg, where f is the angle of the direction of light propagation relative to the velocity v W of the laboratory. Thus, violations of the constancy of the speed of light are described by two nonzero parameter combinations. Recently, a comprehensive dynamical test theory of LLI violation has been developed, the standard model extension sSME df 9g. It is based on the Lagrangian of the standard model, extended by terms that violate LLI and CPT. These terms describe possible violations in the behavior of both matter and fields, and contain a large number of unknown parameters, whose values can in principle be determined by an appropriately large set of spartially independentd experiments. In particular, the extended Lagrangian of the electro