CP violation in cosmology

TL;DR

This paper reviews how CP violation affects the asymmetry between matter and antimatter in the universe, discussing mechanisms, kinetics, and implications for baryogenesis and cosmic antimatter.

Contribution

It introduces a detailed analysis of CP-violation mechanisms and the kinetics of charge asymmetry generation in cosmology, including the cyclic balance condition.

Findings

Identification of three CP-violation mechanisms in cosmology

Derivation of the cyclic balance condition for charge asymmetry

Discussion of scenarios for baryogenesis and cosmic antimatter

Abstract

Cosmological implications of asymmetry between particles and antiparticles are reviewed. Three possible mechanisms of CP-violation in cosmology are described. General features of kinetics of generation of cosmological charge asymmetry are discussed in detail. In particular, the cyclic balance condition, which plays the same role in time non-invariant theory as detailed balance does in T-invariant case, is derived. Several scenarios of baryogenesis are described with an emphasis on CP-violation mechanisms. Production of cosmic antimatter and a possibility of its ``living'' in our neighborhood is discussed.