Electromagnetic Tests of Lorentz and CPT Symmetry

Abstract

A review is presented of some recent Lorentz and CPT tests in atomic and particle systems where the predominant interactions are described by quantum electrodynamics. A theoretical framework extending QED in the context of the standard model is used to analyze these systems. Experimental signatures of possible Lorentz and CPT violation are investigated, and bounds are discussed.

Comments: 10 pages, talk presented at the Workshop on Electromagnetic Probes of Fundamental Physics, Erice, Sicily, October, 2001