Asymmetric Dark Matter, Inflation and Leptogenesis from B-L Symmetry Breaking

TL;DR

This paper presents a unified model linking dark matter, inflation, and baryon asymmetry through B-L symmetry breaking, utilizing the neutrino seesaw mechanism and scalar decays to explain cosmic phenomena.

Contribution

It introduces a novel framework where B-L symmetry breaking naturally accounts for dark matter stability, inflation, and matter-antimatter asymmetry in a unified manner.

Findings

Dark matter candidate stability from matter parity

Inflation driven by scalar field from B-L breaking

Reheating via right-handed neutrino decays

Abstract

We propose a unified setup for dark matter, inflation and baryon asymmetry generation through the neutrino mass seesaw mechanism. Our scenario emerges naturally from an extended gauge group containing $B-L$ as a non-commutative symmetry, broken by a singlet scalar that also drives inflation. Its decays reheat the universe, producing the lightest right-handed neutrino. Automatic matter parity conservation leads to the stability of an asymmetric dark matter candidate, directly linked to the matter-antimatter asymmetry in the universe.