Theoretical and Phenomenological Aspects of CPT Violation

Abstract

I review briefly various models and ways of Quantum-Gravity induced CPT violation, and discuss in some detail their phenomenology, in particular precision CPT tests in neutral mesons, and hydrogen/antihydrogen spectroscopy. As I shall argue, severe constraints can be placed in CPT violating parameters, with sensitivities that can safely exclude models with effects suppressed by a single power of Planck mass.

Comments: 9 pages latex, Invited talk, LEAP03, Yokohama (Japan), 3-7 March 2003, Proc. Nucl. Instr. Methds. to appear