Impact of massive neutrinos on the nonlinear matter power spectrum

被引：126

作者：

Saito, Shun ^{[1
]}

Takada, Masahiro ^{[2
,3
]}

Taruya, Atsushi ^{[3
,4
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Tokyo 1130033, Japan

[2] Tohoku Univ, Astron Inst, Sendai, Miyagi 9808578, Japan

[3] Univ Tokyo, Inst Phys & Math Univ, Chiba 2778582, Japan

[4] Univ Tokyo, Res Ctr Early Univ, Sch Sci, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.100.191301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first attempt to analytically study the nonlinear matter power spectrum for a mixed dark matter model containing neutrinos of total mass similar to 0.1 eV, 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 sigma(m(nu,tot))similar to 0.07 eV in constraining the total neutrino mass for the planned galaxy redshift survey, a factor of 2 improvement compared to the linear regime.

引用

页数：4

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