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Exact Global Solutions of Brane Universes and Big Bounce

Hongya Liu
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Abstract

Exact global solutions of five-dimensional cosmological models compactified on a $S_1/Z_2$ orbifold with two 3-branes are presented, and evolution of a simple model is studied. It is found that on all 4D spacetime hypersurfaces, except a singular one, the expanding universe was started not from a big bang but from a big bounce, and before the bounce the universe was in a deflationary contracting phase. It is also found that whether the energy density on the second brane is positive, zero, or negative depends on the size of the fifth dimension.

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Hongya Liu. 2003-05-06. Exact Global Solutions of Brane Universes and Big Bounce. https://doi.org/10.1016/s0370-2693(03)00394-0

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