Matter and antimatter: the two arrows of time

TL;DR

The paper explores the relationship between antimatter and the two arrows of time, proposing that antimatter's discovery could confirm the existence of opposite time directions in our universe, aiding understanding of physical laws.

Contribution

It suggests a novel interpretation linking antimatter to the two arrows of time, proposing that discovering antimatter's macroscopic behavior could confirm this duality.

Findings

Antiparticles can be viewed as particles moving backwards in time.

The discovery of antimatter may confirm the existence of two opposite time-arrows.

Understanding antimatter's macroscopic behavior could validate the two arrows of time.

Abstract

Antiparticles may be interpreted as ordinary particles travelling backwards in time and the two descriptions are considered equivalent, at least in special relativity and relativistic quantum mechanics. It is suggested that, vice versa, the discovery of antimatter should be the confirmation that our world is "endowed" with two opposite time-arrows and such a description could be more useful and convenient from the point of view of the understanding of the world itself, at least for a simple reason: whenever phenomena are observed from a "reference frame" from which the world appears more symmetric, it is easier to understand the physical laws which regulate it. If, in the future, it is possible to discover how a macroscopic system of antimatter behaves, it will be also possible to confirm (or not) the "reality" of the two arrows of time.