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

2011/10/16 by Guo-Ying Qi, Qi, Guo-Ying · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Relativity and Gravitational Theory #gr-qc

paper · pdf · doi:10.48550/arxiv.1110.3449

29 pages

arxiv created 2011/10/16 · arxiv updated 2011/10/18

Abstract

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.

Cited by

• Torsion and accelerating expansion of the universe in quadratic gravitation

Related

• A exact de Sitter cosmological solution of quadratic gravitation with torsion
• Gravitational stability of inflatons and torsion in Einstein-Cartan-Klein-Gordon Cosmology
• Gravitational Stability of inflaton and torsion in Einstein-Cartan-Klein-Gordon cosmology with kinky potentials
• Cosmology in the De Donder-Weyl Formulation of Einstein-Cartan Gravity
• On the stability of de Sitter inflationary background solution in scalar-tensor cosmology