Abstract
We investigate the bounce cosmology induced by inhomogeneous viscous fluids in FRW space-time (non necessarily 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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Myrzakulov, R., Sebastiani, L. Bounce solutions in viscous fluid cosmology. Astrophys Space Sci 352, 281–288 (2014). https://doi.org/10.1007/s10509-014-1897-8
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DOI: https://doi.org/10.1007/s10509-014-1897-8