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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Carneiro, Saulo | - |
dc.creator | Carneiro, Saulo | - |
dc.date.accessioned | 2014-02-21T18:48:27Z | - |
dc.date.issued | 2007 | - |
dc.identifier.issn | 1751-8113 | - |
dc.identifier.uri | http://repositorio.ufba.br/ri/handle/ri/14674 | - |
dc.description | Texto completo: acesso restrito. p. 6841-6848 | pt_BR |
dc.description.abstract | 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 ≈ 1. This primordial era ends in a fast phase transition, during which H and Λ decrease to nearly zero in a few Planck times, with the 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 supernovae Ia leads to cosmological parameters in agreement with other current estimations. | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.source | http://dx.doi.org/10.1088/1751-8113/40/25/S28 | pt_BR |
dc.title | Non-singular inflation with vacuum decay | pt_BR |
dc.title.alternative | Journal of Physics A: Mathematical and Theoretical | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 40, n. 25 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (FIS) |
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Arquivo | Descrição | Tamanho | Formato | |
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1751-8121_40_25_S28.pdf | 256 kB | Adobe PDF | Visualizar/Abrir |
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