Antimatter in Different Baryogenesis Scenarios

Abstract

Possible mechanisms of abundant creation of antimatter in the universe are reviewed. The necessary conditions for that are: baryonic charge nonconservation, spontaneous breaking of charge symmetry or nonequilibrium initial state, and the formation of appropriate initial conditions during inflation. In this case the universe may be populated with domains, cells, or even stellar size objects consisting of antimatter.

Comments: Latex, 9 pages, presented at International Workshop on Baryon Instability, Oak Ridge, Tennessee, March 28-39, 1996. (to be published in the Proceedings)