Shear Dynamics in Bianchi i Cosmologies with Rn-GRAVITY

Details Shear Dynamics in Bianchi i Cosmologies with Rn-GRAVITY Shear Dynamics in Bianchi i Cosmologies with Rn-GRAVITY

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mgm..conf.1213l&link_type=abstract

"THE ELEVENTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation an

Physics

Higher Order Gravity, F(R)-Theories, Isotropisation, Bianchi I Spacetimes

Scientific paper

We consider the case of Rn-gravity and perform a detailed analysis of the dynamics in Bianchi I cosmologies which exhibit local rotational symmetry (LRS). We find exact solutions and study their behaviour and stability in terms of the values of the parameter n. In particular, we found a set of cosmic histories in which the universe is initially isotropic, then develops shear anisotropies which approaches a constant value.

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