Perturbative and nonperturbative contributions to a simple model for baryogenesis |
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| Authors: | K.R.S. Balaji,Bjö rn Garbrecht |
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| Affiliation: | 1. Department of Physics, McGill University, 3600 University Street, Montréal, QC, H3A 2T8, Canada;2. Physique des Particules, Université de Montréal, C.P. 6128, succ. Centre-Ville, Montréal, QC, H3C 3J7, Canada;3. Département des Sciences de la Terre et de l''Atmosphère, Université du Québec à Montréal, C.P. 8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada;4. School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK |
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| Abstract: | Single field baryogenesis, a scenario for Dirac leptogenesis sourced by a time-dependent scalar condensate, is studied on a toy model. 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. Neglecting backreaction effects, we find that over a wide parametric range perturbative decay and preheating contribute by the same order of magnitude to the baryon asymmetry. |
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