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