The nature of singularity in multidimensional anisotropic Gauss-Bonnet cosmology with a perfect fluid

Abstract

We investigate dynamics of (4+1) and (5+1) dimensional flat anisotropic Universe filled by a perfect fluid in the Gauss-Bonnet gravity. An analytical solutions valid for particular values of the equation of state parameter $w=1/3$ have been found. For other values of $w$ structure of cosmological singularity have been studied numerically. We found that for $w>1/3$ the singularity is isotropic. Several important differences between (4+1) and (5+1) dimensional cases are discussed.

8 pages, 2 figs

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