We use measurements of luminosity-dependent galaxy bias at several different
redshifts, SDSS at z=0.05, DEEP2 at z=1 and LBGs at z=3.8, combined with
WMAP five-year cosmic microwave background anisotropy data and SDSS Red
Luminous Galaxy survey three-dimensional clustering power spectrum to put
constraints on cosmological parameters. Fitting this combined dataset, we show
that the luminosity-dependent bias data that probe the relation between halo
bias and halo mass and its redshift evolution are very sensitive to sum of the
neutrino masses: in particular we obtain the upper limit of ∑mν<0.28eV at the 95% confidence level for a ΛCDM+mν
model, with a σ8 equal to σ8=0.759±0.025 (1σ). When we
allow the dark energy equation of state parameter w to vary we find
w=−1.30±0.19 for a general wCDM+mν model with the 95% confidence
level upper limit on the neutrino masses at ∑mν<0.59eV. The
constraint on the dark energy equation of state further improves to
w=−1.125±0.092 when using also ACBAR and supernovae Union data, in addition
to above, with a prior on the Hubble constant from the Hubble Space Telescope.Comment: 9 pages, 6 figures, submitted to PR