Dynamics of the anisotropic Kantowsky-Sachs geometries in $R^n$ gravity

Details Dynamics of the anisotropic Kantowsky-Sachs geometries in $R^n$ gravity Dynamics of the anisotropic Kantowsky-Sachs geometries in $R^n$ gravity

2010-07-22

arxiv.org/abs/1007.3956v2

Class.Quant.Grav.28:065008,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages, 3 figures. Revised and updated version

Scientific paper

10.1088/0264-9381/28/6/065008

We construct general anisotropic cosmological scenarios governed by an $f(R)$ gravitational sector. Focusing then on Kantowski-Sachs geometries in the case of $R^n$-gravity, and modelling the matter content as a perfect fluid, we perform a detailed phase-space analysis. We find that at late times the universe can result to a state of accelerating expansion, and additionally, for a particular $n$-range ($2

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