CP, T and fundamental interactions

Abstract

We discuss the importance of the CP (simultaneous particle-antiparticle and left-right permutation) and T (time reversal) symmetries in the context of fundamental interactions. We show that they may provide clues to go beyond the 4-D gauge interactions. We insist on the fact that T violation is not associated to a degradation (like in entropy), but simply characterized by different trajectories.

Comments: This is a "basic" introduction (non-technical) aimed at showing the importance of CP violation wrt gauge theories