Matter-antimatter asymmetry without departure from thermal equilibrium

TL;DR

This paper investigates a novel approach to baryogenesis that does not require departure from thermal equilibrium, focusing on the constraints and roles of CPT violation and baryon number nonconservation.

Contribution

It proposes a scenario for matter-antimatter asymmetry that operates within thermal equilibrium, highlighting the conditions on CPT violation and baryon number interactions.

Findings

Identifies a possible baryogenesis scenario within thermal equilibrium.

Establishes constraints on CPT violation effects.

Discusses the role of baryon number nonconserving interactions.

Abstract

We explore the possibility of baryogenesis without departure from thermal equilibrium. A possible scenario is found, though it contains strong constraints on the size of the $CPT$ violation ($CPTV$) effects and on the role of the $B$ (baryon number) nonconserving interactions which are needed for it.