Creating the Baryon Asymmetry from Lepto-Bubbles

TL;DR

This paper introduces a novel leptogenesis mechanism where a CP-violating phase transition dynamically generates lepton asymmetry through the Weinberg operator, linking baryon asymmetry to neutrino physics.

Contribution

It presents a new baryogenesis scenario involving a CP-violating phase transition that dynamically realizes the Weinberg operator, connecting baryon asymmetry with neutrino parameters.

Findings

Proposes a phase transition-driven leptogenesis mechanism.

Establishes a link between baryon asymmetry and neutrino parameters.

Provides a framework connecting leptogenesis to low-energy neutrino physics.

Abstract

We propose a new mechanism of baryogenesis which proceeds via a CP-violating phase transition. During this phase transition, the coupling of the Weinberg operator is dynamically realised and subsequently a lepton asymmetry is generated via the non-zero interference of this operator at different times. This new scenario of leptogenesis provides a direct connection between the baryon asymmetry, low energy neutrino parameters and leptonic flavour models.