Embedded Domain Walls and Electroweak Baryogenesis

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.

15 pages, 1 figure; v2: updated references, discussion of local EWBG and figure 1 added, matches version published in Phys. Rev. D