Particle production from symmetry breaking after inflation and leptogenesis
arXiv:hep-ph/0109230 · doi:10.1016/S0370-2693(02)01820-8
Abstract
Recent studies suggest that the process of symmetry breaking after inflation typically occurs very fast, within a single oscillation of the symmetry-breaking field, due to the spinodal growth of its long-wave modes, otherwise known as `tachyonic preheating'. We show how this sudden transition from the false to the true vacuum can induce a significant production of particles, bosons and fermions, coupled to the symmetry-breaking field. We find that this new mechanism of particle production in the early Universe may have interesting consequences for the origin of supermassive dark matter and the generation of the observed baryon asymmetry through leptogenesis.
17 pages, 2 figures. Significantly enlarged version, including a more detailed discussion of leptogenesis. To appear in Physics Letters B
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Cited by in corpus (50)
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