Asymptotic cosmological regimes in scalar–torsion gravity with a perfect fluid
| Autor: | Maria A. Skugoreva, Alexey Toporensky |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Coupling constant Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics Scalar (physics) FOS: Physical sciences Perfect fluid General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences Power law General Relativity and Quantum Cosmology Gravitation De Sitter universe 0103 physical sciences 010306 general physics Engineering (miscellaneous) Scalar field Mathematical physics Quintessence |
| Zdroj: | European Physical Journal C |
| ISSN: | 1434-6052 1434-6044 |
| DOI: | 10.1140/epjc/s10052-016-4190-x |
| Popis: | We consider cosmological dynamics of nonminimally coupled scalar field in the scalar-torsion gravity in the presence of a hydrodynamical matter. Potential of the scalar field have been chosen as power-law with negative index, this type of potentials is usually used in quintessence scenarios. We identify several asymptotic regimes, including de Sitter, kinetic dominance, kinetic tracker and tracker solution and study conditions for their existence and stability. We show that for each combination of coupling constant and potential power index one of regimes studied in the present paper is stable to the future. 14 pages with 2 tables and 1 eps figure. Minor changes, published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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