Baryogenesis, Domain Walls and the Role of Gravity

Details Baryogenesis, Domain Walls and the Role of Gravity Baryogenesis, Domain Walls and the Role of Gravity

1993-04-01

arxiv.org/abs/hep-ph/9304203v1

Phys.Lett. B309 (1993) 258-263

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages (LaTeX), PURD-TH-93-06, SISSA-/93/49-A

Scientific paper

10.1016/0370-2693(93)90930-G

It has been recently speculated that global symmetries are broken by gravity. We propose a scenario for the generation of the baryon asymmetry in the early Universe in which the domain walls predicted by theories with discrete symmetries become unstable due to these Planck scale effects. The relative motion of the decaying walls can provide a mechanism for the departure from thermal equilibrium necessary to have a nonvanishing baryon asymmetry. In particular, we implement this idea within the frameworks of the Left-Right and Quark-Lepton symmetric models.

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