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

Journal Article · Wed Jul 01 04:00:00 EDT 2009 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2009/07/012· OSTI ID:22273178

Wang, Anzhong; Wu, Yumei ^[1]

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1. GCAP-CASPER, Physics Department, Baylor University, Waco, TX 76798-7316 (United States)

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 = wρ, where p and ρ 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.

• OSTI ID: 22273178
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 07 Vol. 2009; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ACCELERATION
ASTROPHYSICS
COSMOLOGICAL MODELS
COSMOLOGY
ENERGY DENSITY
EQUATIONS OF STATE
GRAVITATION
IDEAL FLOW
SINGULARITY
THERMODYNAMICS
UNIVERSE