Perturbative and Nonperturbative Contributions to a Simple Model for Baryogenesis

Details Perturbative and Nonperturbative Contributions to a Simple Model for Baryogenesis Perturbative and Nonperturbative Contributions to a Simple Model for Baryogenesis

2006-03-28

arxiv.org/abs/hep-ph/0603230v2

Phys.Lett. B638 (2006) 320-324

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures

Scientific paper

10.1016/j.physletb.2006.05.080

Single field baryogenesis, a scenario for Dirac leptogenesis sourced by a time-dependent scalar condensate, is studied. We compare the creation of the charge asymmetry by the perturbative decay of the condensate with the nonperturbative decay, a process of particle production commonly known in the context of inflation as preheating. The nonperturbative channel dominates when the coupling of the scalar field to leptons is sufficiently large.

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