Gravitationally induced adiabatic particle production: from big bang to de Sitter
In the background of a flat homogeneous and isotropic space–time, we consider a scenario of the Universe driven by the gravitationally induced 'adiabatic' particle production with constant creation rate. We have shown that this Universe attains a big bang singularity in the past and at lat...
| Autor: | |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/102508 |
| Acesso em linha: | https://hdl.handle.net/2117/102508 https://dx.doi.org/10.1088/0264-9381/33/16/165007 |
| Access Level: | acceso abierto |
| Palavra-chave: | Quantum cosmology Particle creation Big Bang Current cosmic acceleration. Cosmologia Àrees temàtiques de la UPC::Matemàtiques i estadística |
| Resumo: | In the background of a flat homogeneous and isotropic space–time, we consider a scenario of the Universe driven by the gravitationally induced 'adiabatic' particle production with constant creation rate. We have shown that this Universe attains a big bang singularity in the past and at late-time it asymptotically becomes de Sitter. To clarify this model Universe, we performed a dynamical analysis and found that the Universe attains a thermodynamic equilibrium in this late de Sitter phase. Finally, for the first time, we have discussed the possible effects of 'adiabatic' particle creations in the context of loop quantum cosmology. |
|---|