Cosmology with sterile neutrino masses from oscillation experiments
  There are hints, both from cosmology and from neutrino oscillation
experiments, that one or two sterile neutrinos with eV masses are favored. We
consider the implications of combining data from short baseline neutrino
experiments with cosmological observations. In particular we consider
cosmological models where the equation of state of dark energy and the
curvature are allowed to vary. We find that the consistency of results from
short baseline experiments and cosmology is dependent on the cosmological data
sets that are used. When the two are consistent, we find that the inclusion of
information from short baseline experiments only mildly affects the preferred
values of the cosmological model parameters. A universe with a cosmological
constant type dark energy and zero curvature is still fully consistent with the
data we use. We also report that a thermalized sterile neutrino in the 10 eV
range is fully consistent with a wide range of cosmological data as long as
information on the matter power spectrum in not taken into account.
