Baryogenesis from gravitational decay of TeV particles in theories with low scale gravity
dc.contributor.author | Bambi, Cosimo | en_US |
dc.contributor.author | Dolgov, Alexander D. | en_US |
dc.contributor.author | Freese, Katherine | en_US |
dc.date.accessioned | 2008-04-02T14:49:50Z | |
dc.date.available | 2008-04-02T14:49:50Z | |
dc.date.issued | 2007-04-01 | en_US |
dc.identifier.citation | Bambi, C; Dolgov, A D; Freese, K (2007). "Baryogenesis from gravitational decay of TeV particles in theories with low scale gravity." Journal of Cosmology and Astroparticle Physics. 04(005). <http://hdl.handle.net/2027.42/58172> | en_US |
dc.identifier.issn | 1475-7516 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/58172 | |
dc.description.abstract | In models with the fundamental gravity scale in the TeV range, early cosmology is quite different from the standard picture, because the universe must have arisen at a much lower temperature and the electroweak symmetry was probably never restored. In this context, baryogenesis appears to be problematic: if the physics involved is essentially that of the standard model, ‘conventional’ non-conserving baryon number processes are completely negligible at such low temperatures. In this paper we show that the observed matter–antimatter asymmetry of the universe may be generated by gravitational decay of TeV mass particles: such objects can be out of equilibrium after inflation and, if their mass is of the same order of magnitude as the true quantum gravity scale, they can quickly decay through a black hole intermediate state, violating global symmetries, in particular, baryon number. In this context, we take advantage of the fact that the ‘Sakharov conditions’ for baryogenesis can be more easily satisfied with a low fundamental scale of gravity. | en_US |
dc.format.extent | 3118 bytes | |
dc.format.extent | 554189 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | IOP Publishing Ltd | en_US |
dc.title | Baryogenesis from gravitational decay of TeV particles in theories with low scale gravity | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Michigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, MI 48109, USA | en_US |
dc.contributor.affiliationother | Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, I-44100 Ferrara, Italy ; Dipartimento di Fisica, Università degli Studi di Ferrara, I-44100 Ferrara, Italy | en_US |
dc.contributor.affiliationother | Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, I-44100 Ferrara, Italy ; Dipartimento di Fisica, Università degli Studi di Ferrara, I-44100 Ferrara, Italy ; Institute of Theoretical and Experimental Physics, 113259, Moscow, Russia | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/58172/2/jcap7_04_005.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1088/1475-7516/2007/04/005 | en_US |
dc.identifier.source | Journal of Cosmology and Astroparticle Physics. | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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