Scalar field models of dark energy with barotropic equation of state:
  properties and observational constraints from different datasets
  The possibility of constraining the parameters of scalar field dark energy
with barotropic equation of state using different available datasets is
discussed. It has been found that the initial value of dark energy equation of
state parameter is constrained very weakly by most of the data. We have
determined the constraints on this parameter, which come from the combined
dataset including supernovae from the full SDSS compilation with the MLCS2k2
fitting of light curves. We discuss also the possibility of distinguishing
between different dark energy models with barotropic equation of state using
the future data on CMB anisotropies.
