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arXiv · 1403.0681

Bounce solutions in viscous fluid cosmology

Ratbay Myrzakulov·Lorenzo Sebastiani
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Abstract

We investigate the bounce cosmology induced by inhomogeneous viscous fluids in FRW space-time (non necessarly flat), taking into account the early-time acceleration after the bounce. Different forms for the scale factor and several examples of fluids will be considered. We also analyze the relation between bounce and finite-time singularities and between the corresponding fluids realizing this scenarios. In the last part of the work, the study is extended to the framework of $f(R)$-modified gravity, where the modification of gravity may also be considered as an effective (viscous) fluid producing the bounce.

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Ratbay Myrzakulov, Lorenzo Sebastiani. 2014-03-24. Bounce solutions in viscous fluid cosmology. https://doi.org/10.1007/s10509-014-1897-8

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