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(mν,tot) ~ 0. 07eV in constraining the total neutrino mass for the planned galaxy redshift survey, a factor of 2 improvement compared to the linear regime.

Department(s)

Physics

Keywords and Phrases

Constrained optimization; Linear systems; Mathematical models; Nonlinear equations; Power spectrum, Massive neutrinos; Nonlinear models; Redshift survey, Particle beams

International Standard Serial Number (ISSN)

0031-9007; 1079-7114

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2008 American Physical Society (APS), All rights reserved.

Publication Date

01 May 2008

Included in

Physics Commons

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