Neutrino mass constraint from CMB and its degeneracy with other cosmological parameters
Abstract
We show that the cosmic microwave background (CMB) data of WMAP can give subelectronvolt limit on the neutrino mass: mnu < 0.63 eV (95% CL). We also investigate its degeneracy with other cosmological parameters. In particular, we show the Hubble constant derived from the WMAP data decreases considerably when the neutrino mass is a few times 0.1 eV.
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