Father Time Ii: A Physical Basis Behind Feynman's Idea of (Anti)particles Moving Backward in Time, and an Extension of the CPT Theorem to Include Nonlocal Gauge Fields

Abstract

It was demonstrated in a recent paper (Mod.Phys.Lett. A13, 1265 (1998) ; hepth/9902020) that the existence of a non-thermodynamic arrow of time at the atomic level is a fundamental requirement for conservation of energy in matter-radiation interaction.Since the universe consists of two things only -energy and massive matter -we argue that as a consequence of this earlier result, particles and antiparticles must necessarily move in opposite directions in time. Our result further indicates that the CPT theorem can be extended to cover non-local gauge fields.