Primordial Black Hole Baryogenesis

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dc.creatorBaumann, Daniel
dc.creatorSteinhardt, Paul J.
dc.creatorTurok, Neil
dc.date2007-03-28
dc.date.accessioned2026-07-07T07:54:51Z
dc.date.available2026-07-07T07:54:51Z
dc.descriptionWe reconsider the possibility that the observed baryon asymmetry was generated by the evaporation of primordial black holes that dominated the early universe. We present a simple derivation showing that the baryon asymmetry is insensitive to the initial black hole density and the cosmological model but is sensitive to the temperature-dependence of the CP and baryon-violating (or lepton-violating) interactions. We also consider the possibility that black holes stop evaporating and form Planck-mass remnants that act as dark matter. We show that primordial black holes cannot simultaneously account for both the observed baryon asymmetry and the (remnant) dark matter density unless the magnitude of CP violation is much greater than expected from most particle physics models. Finally, we apply these results to ekpyrotic/cyclic models, in which primordial black holes may form when branes collide. We find that obtaining the observed baryon asymmetry is compatible with the other known constraints on parameters.
dc.description19 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/hep-th/0703250
dc.identifierhttp://arxiv.org/abs/hep-th/0703250
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126770
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.titlePrimordial Black Hole Baryogenesis
dc.typetext

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