Viscous Fluids and Gauss-Bonnet Modified Gravity
arXiv:1004.1505 · doi:10.1007/s10714-010-1031-3
Abstract
We study effects of cosmic fluids on finite-time future singularities in modified -gravity, where and are the Ricci scalar and the Gauss-Bonnet invariant, respectively. We consider the fluid equation of state in the general form, , and we suppose the existence of a bulk viscosity. We investigate quintessence region () and phantom region () and the possibility to change or avoid the singularities in -gravity. Finally, we study the inclusion of quantum effects in large curvatures regime.
14 pages
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