Cosmic antimatter: models and phenomenology

TL;DR

This paper explores models of cosmic antimatter formation during baryogenesis, suggesting antimatter could exist in our Galaxy and discussing potential observational signatures of antimatter objects.

Contribution

It introduces scenarios where significant antimatter can exist cosmologically and discusses possible antimatter objects and their observational signatures.

Findings

Antimatter may be abundant in our Galaxy.

Various forms of antimatter objects are possible.

Observational signatures of antimatter objects are discussed.

Abstract

The possibility of creation of cosmologically significant antimatter are analyzed in different scenarios of baryogenesis. It is argued that there may exist plenty of antimatter even in our Galaxy. Possible forms of antimatter objects and their observational signatures are discussed.