Reactor sterile neutrinos, dark energy, and the age of the universe

There are indications that the neutrino oscillation data from reactor experiments and the LSND and MiniBooNE experiments show a preference for two sterile neutrino species, both with masses in the eV region. We show that this result has a significant impact on some important cosmological parameters. Specifically, we use a combination of CMB, LSS, and SN1A data and show that the existence of two light, sterile neutrinos would rule out the cosmological constant as dark energy at a 95% confidence level and lower the expansion age of the universe to 12.58 ± 0.26 Gyr