Asymptotic cosmological regimes in scalar-torsion gravity with a perfect fluid

Abstract

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

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• Stability of symmetric teleparallel scalar-tensor cosmologies with alternative connections
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• Dynamics of a higher-dimension Einstein-Scalar-Gauss-Bonnet cosmology
• Cosmic acceleration in screening hybrid quintessence model
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• Global portraits of nonminimal teleparallel inflation
• Parameterized post Newtonian approximation in a teleparallel model of dark energy with a boundary term