Impact of Massive Neutrinos on Nonlinear Matter Power Spectrum

Author

Shun Saito, Missouri University of Science and TechnologyFollow
Masahiro Takada
Atsushi Taruya

Abstract

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(m_v,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.

Recommended Citation

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

Meeting Name

KEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008 (2008: Mar. 12-14, Tsukuba, Japan)

Department(s)

Physics

Keywords and Phrases

Galaxy redshift survey; Massive neutrinos; Nonlinear gravitational clustering

International Standard Book Number (ISBN)

978-073540567-7

International Standard Serial Number (ISSN)

0094-243X; 1551-7616

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 American Institute of Physics (AIP), All rights reserved.

Publication Date

01 Mar 2008