Horava-Lifshitz cosmology with generalized Chaplygin gas
  We investigate cosmological scenarios of generalized Chaplygin gas in a
universe governed by Horava-Lifshitz gravity. We consider both the detailed and
non-detailed balance versions of the gravitational background, and we include
the baryonic matter and radiation sectors. We use observational data from Type
Ia Supernovae (SNIa), Baryon Acoustic Oscillations (BAO), and Cosmic Microwave
Background (CMB), along with requirements of Big Bang Nucleosynthesis (BBN), to
constrain the parameters of the model, and we provide the corresponding
likelihood contours. We deduce that the present scenario is compatible with
observations. Additionally, examining the evolution of the total
equation-of-state parameter, we find in a unified way the succession of the
radiation, matter, and dark energy epochs, consistently with the thermal
history of the universe.
