Electroweak baryogenesis induced by a scalar field

Details Electroweak baryogenesis induced by a scalar field Electroweak baryogenesis induced by a scalar field

1998-09-14

arxiv.org/abs/hep-ph/9809365v1

Phys.Rev.Lett. 82 (1999) 2628-2631

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.82.2628

A cosmological pseudoscalar field coupled to hypercharge topological number density can exponentially amplify hyperelectric and hypermagnetic fields while coherently rolling or oscillating, leading to the formation of a time-dependent condensate of topological number density. The topological condensate can be converted, under certain conditions, into baryons in sufficient quantity to explain the observed baryon asymmetry in the universe. The amplified hypermagnetic field can perhaps sufficiently strengthen the electroweak phase transition, and by doing so, save any pre-existing baryon number asymmetry from extinction.

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