Stable de Sitter critical points of the cosmology in quadratic gravitation with torsion

Details Stable de Sitter critical points of the cosmology in quadratic gravitation with torsion Stable de Sitter critical points of the cosmology in quadratic gravitation with torsion

2011-10-16

arxiv.org/abs/1110.3449v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

29 pages

Scientific paper

Homogeneous isotropic spatial flat cosmological models with two torsion functions in vacuum are built and investigated in the framework of de Sitter gauge theory of gravity. It is shown that by certain choices of parameters of gravitational Lagrangian the cosmological equations have some exact constant solutions that turn out to be stable de Sitter critical points of dynamical systems and can explain observable acceleration of cosmological expansion. The role of the space-time torsion provoking the acceleration of cosmological expansion is shown.

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