Analytical approach of late-time evolution in a torsion cosmology

Details Analytical approach of late-time evolution in a torsion cosmology Analytical approach of late-time evolution in a torsion cosmology

2010-10-20

arxiv.org/abs/1010.4117v1

Phys. Lett.B694:186-190, 2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12pages,6 figures

Scientific paper

10.1016/j.physletb.2010.09.060

In this letter, we study the late-time evolution of a torsion cosmology only with the spin-$0^+$ mode. We find three kinds of analytical solutions with a constant affine scalar curvature. In the first case, it is not physical because the matter density will be negative. In the second case, it shows that the dark energy can be mimicked in the torsion cosmological model. In the third case, the characteristic of late-time evolution is similar to that of the universe of matter dominant. And we also find a kind of expression with the non-constant curvature that the periodic character of numerical calculation is only the reflection of solution in a specific period of evolution. Using these expressions, we shall be able to predict the evolution over the late-time. From this prediction, we know the fate of universe that the universe would expand forever, slowly asymtotically to a halt.

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