Lorentz and CPT Violation in Precision Experiments

The Lorentz and CPT invariances of relativity are fundamental in physics. However, tiny violation of these invariances could emerge in an underlying unified theory such as strings. This talk focuses on possible experimental effects for Lorentz and CPT violation. In particular, observable signals in measurements from precision experiments involving confined particles and antiparticles will be discussed. Existing measurements are used to extract new and improved bounds on numerous coefficients for Lorentz and CPT violation, and prospects for future experiments are described.