CP, T and fundamental interactions

TL;DR

This paper explores the significance of CP and T symmetries in fundamental interactions, suggesting they could reveal physics beyond traditional 4-D gauge theories and emphasizing T violation as trajectory differences rather than entropy increase.

Contribution

It highlights the potential role of CP and T symmetries in uncovering new physics beyond standard gauge interactions and clarifies the nature of T violation.

Findings

CP and T symmetries are crucial in fundamental interactions.

T violation is characterized by different trajectories, not entropy degradation.

Insights may guide beyond 4-D gauge theories.

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.