Anisotropic Cosmology and (Super)Stiff Matter in Hořava's Gravity Theory

Details Anisotropic Cosmology and (Super)Stiff Matter in Hořava's Gravity Theory Anisotropic Cosmology and (Super)Stiff Matter in Hořava's Gravity Theory

2009-05-05

arxiv.org/abs/0905.0700v4

Phys.Rev.D79:124031,2009

Physics

High Energy Physics

High Energy Physics - Theory

Version 4: 16 pages. Results unchanged but extensive rearranging, and some addition, of materials. More references added. To b

Scientific paper

10.1103/PhysRevD.79.124031

We study anisotropic cosmology in Ho\v{r}ava's gravity theory and obtain Kasner type solutions, valid for any number d of spatial dimensions. The corresponding exponents satisfy two relations, one involving the marginal coupling \lambda. Also, Ho\v{r}ava's (super)renormalisable theory predicts (super)stiff matter whose equation of state is p = w \rho with w \ge 1. We discuss briefly the implications of these results for the nature of cosmological collapse.

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