Bouncing cosmology without anisotropy

Details Bouncing cosmology without anisotropy Bouncing cosmology without anisotropy

2010-10-12

arxiv.org/abs/1010.2410v1

Physics

General Physics

11 pages, no figures

Scientific paper

Using non-linear equation of state for pressure and density energy, we show that the universe is began with a smooth and isotropic bounce. We use a non-linear equation of state which is a binary mixture of perfect fluid and dark energy. We show that in order to preserve a smooth and isotropic bounce, the source for contraction before the bounce, must have an equation of state with $\omega>1$ (Ekpyrotic matter) and a dark energy with positive pressure.

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