Electroweak Baryogenesis without the Phase Transition
| dc.creator | Joyce, Michael | |
| dc.date | 1997-09-11 | |
| dc.date.accessioned | 2026-07-07T04:02:25Z | |
| dc.date.available | 2026-07-07T04:02:25Z | |
| dc.description | Radiation domination at the electroweak epoch is a simplifying assumption, but one for which there is no observational basis. Treating the expansion rate as a variable, I re-examine electroweak baryogenesis in various scenarios. At a first order phase transition the main effect is on the sphaleron bound, which becomes a lower bound on the expansion rate in any given theory. At a second-order or cross-over phase transition, the created baryon asymmetry is directly proportional to the expansion rate. I sketch an alternative post-inflationary cosmology, in which the kinetic energy of a scalar field dominates the Universe until shortly before nucleosynthesis, and argue that the observed baryon asymmetry could be produced in this case even at an analytic cross-over. | |
| dc.description | 5 pages, Latex with sprocl.sty, no figures; talk given at the Eotvos Conference in Science ,``Strong and Electroweak Matter '97'', Eger, Hungary, May 1997 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9709321 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9709321 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/47217 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Electroweak Baryogenesis without the Phase Transition | |
| dc.type | text |