Impact of Massive Neutrinos on Nonlinear Matter Power Spectrum
We present the first attempt to analytically study the nonlinear matter power spectrum for a mixed dark matter model containing neutrinos of total mass ∼ 0.1eV, based on cosmological perturbation theory. The suppression in the power spectrum amplitudes due to massive neutrinos is enhanced in the weakly nonlinear regime. We demonstrate that, thanks to this enhanced effect, the use of such a nonlinear model may enable a precision of σ(mv,tot) ~ 0.07eV in constraining the total neutrino mass for the planned galaxy redshift survey, a factor of two improvement compared to the linear regime.
S. Saito et al., "Impact of Massive Neutrinos on Nonlinear Matter Power Spectrum," AIP Conference Proceedings, vol. 1040, pp. 37-41, American Institute of Physics (AIP), Mar 2008.
The definitive version is available at https://doi.org/10.1063/1.2981549
KEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008 (2008: Mar. 12-14, Tsukuba, Japan)
Keywords and Phrases
Galaxy redshift survey; Massive neutrinos; Nonlinear gravitational clustering
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Article - Conference proceedings
© 2008 American Institute of Physics (AIP), All rights reserved.
01 Mar 2008