Non-singular inflation with vacuum decay
| dc.creator | Carneiro, Saulo | |
| dc.date | 2007-01-09 | |
| dc.date.accessioned | 2026-07-07T11:01:34Z | |
| dc.date.available | 2026-07-07T11:01:34Z | |
| dc.description | On the basis of a semi-classical analysis of vacuum energy in an expanding spacetime, we describe a non-singular cosmological model in which the vacuum density decays with time, with a concomitant production of matter. During an infinitely long period we have an empty, inflationary universe, with H \approx 1. This primordial era ends in a fast phase transition, during which H and Λdecrease to nearly zero in a few Planck times, with release of a huge amount of radiation. The late-time scenario is similar to the standard model, with the radiation phase followed by a long dust era, which tends asymptotically to a de Sitter universe, with vacuum dominating again. An analysis of the redshift-distance relation for supernovas Ia leads to cosmological parameters in agreement with other current estimations. | |
| dc.description | Work presented at IRGAC 2006, Barcelona, July 11-15 2006. To appear in a special issue of Journal of Physics A | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0701053 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0701053 | |
| dc.identifier | J.Phys.A40:6841-6848,2007 | |
| dc.identifier | doi:10.1088/1751-8113/40/25/S28 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/187990 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Non-singular inflation with vacuum decay | |
| dc.type | text |