Embedded Domain Walls and Electroweak Baryogenesis

TL;DR

This paper explores how embedded domain walls, stabilized in the early Universe's plasma, can facilitate electroweak baryogenesis, proposing an extension of the Standard Model where such walls exist and are stabilized.

Contribution

It introduces a new Standard Model extension that supports stabilized embedded walls, providing a novel mechanism for electroweak baryogenesis in the early Universe.

Findings

Embedded walls can restore electroweak symmetry in the plasma.

Stabilized embedded walls enable efficient baryogenesis.

A specific Standard Model extension supports these walls.

Abstract

Embedded walls are domain wall solutions which are unstable in the vacuum but stabilized in a plasma of the early Universe. We show how embedded walls in which the electroweak symmetry is restored can lead to an efficient scenario of electroweak baryogenesis. We construct an extension of the Standard Model of particle physics in which embedded walls exist and are stabilized in an electromagnetic plasma.