Multiple ΛCDM cosmology with string landscape features and future singularities
| Autor: | Andrey N. Makarenko, V. V. Obukhov, Shin'ichi Nojiri, Sergei D. Odintsov, Emilio Elizalde |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
High Energy Physics - Theory
Physics Big Rip Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics String (physics) General Relativity and Quantum Cosmology Cosmology Theoretical physics Space and Planetary Science De Sitter universe Dark energy Gravitational singularity Scalar field Dark fluid Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Astrophysics and Space Science. 344:479-488 |
| ISSN: | 1572-946X 0004-640X |
| DOI: | 10.1007/s10509-012-1339-4 |
| Popis: | Multiple $\Lambda$CDM cosmology is studied in a way that is formally a classical analog of the Casimir effect. Such cosmology corresponds to a time-dependent dark fluid model or, alternatively, to its scalar field presentation, and it motivated by the string landscape picture. The future evolution of the several dark energy models constructed within the scheme is carefully investigated. It turns out to be almost always possible to choose the parameters in the models so that they match the most recent and accurate astronomical values. To this end, several universes are presented which mimick (multiple) $\Lambda$CDM cosmology but exhibit Little Rip, asymptotically de Sitter, or Type I, II, III, and IV finite-time singularity behavior in the far future, with disintegration of all bound objects in the cases of Big Rip, Little Rip and Pseudo-Rip cosmologies. Comment: LaTeX 11 pages, 10 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|