Perturbative and Nonperturbative Contributions to a Simple Model for Baryogenesis
K. R. S. Balaji, Bjorn Garbrecht
Abstract
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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