Thermodynamics and classification of cosmological models in the Horava-Lifshitz theory of gravity

Abstract

We study thermodynamics of cosmological models in the Horava-Lifshitz theory of gravity, and systematically investigate the evolution of the universe filled with a perfect fluid that has the equation of state $p=w\rho$, where $p$ and $\rho$ denote, respectively, the pressure and energy density of the fluid, and $w$ is an arbitrary real constant. Depending on specific values of the free parameters involved in the models, we classify all of them into various cases. In each case the main properties of the evolution are studied in detail, including the periods of deceleration and/or acceleration, and the existence of big bang, big crunch, and big rip singularities. We pay particular attention on models that may give rise to a bouncing universe.

revtex4, 21 figures. New references added & some changes made in Introduction. Version to appear in JCAP

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Cited by in corpus (3)

• The Black Hole and Cosmological Solutions in IR modified Horava Gravity
• Testing Hořava-Lifshitz gravity using thin accretion disk properties
• Caustic avoidance in Horava-Lifshitz gravity