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

被引：124
作者：
Wang, Anzhong [1 ]
Wu, Yumei [1 ]
机构：
[1] Baylor Univ, Dept Phys, GCAP CASPER, Waco, TX 76798 USA
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2009年 / 07期
关键词：
modified gravity; cosmic singularity; alternatives to inflation; cosmology of theories beyond the SM; BRANE-WORLD COSMOLOGY; BLACK-HOLE DYNAMICS; DARK ENERGY; EXTRA DIMENSIONS; CONSTRAINTS;
D O I：
10.1088/1475-7516/2009/07/012
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
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页数：41
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