The Nonlinear Cosmological Matter Power Spectrum with Massive Neutrinos I: The Halo Model

Details The Nonlinear Cosmological Matter Power Spectrum with Massive Neutrinos I: The Halo Model The Nonlinear Cosmological Matter Power Spectrum with Massive Neutrinos I: The Halo Model

2004-11-19

arxiv.org/abs/astro-ph/0411552v2

Phys.Rev.D71:043507,2005

Astronomy and Astrophysics

Astrophysics

v2: matches PRD version

Scientific paper

10.1103/PhysRevD.71.043507

Measurements of the linear power spectrum of galaxies have placed tight constraints on neutrino masses. We extend the framework of the halo model of cosmological nonlinear matter clustering to include the effect of massive neutrino infall into cold dark matter (CDM) halos. The magnitude of the effect of neutrino clustering for three degenerate mass neutrinos with m_nu=0.9 eV is of order ~1%, within the potential sensitivity of upcoming weak lensing surveys. In order to use these measurements to further constrain--or eventually detect--neutrino masses, accurate theoretical predictions of the nonlinear power spectrum in the presence of massive neutrinos will be needed, likely only possible through high-resolution multiple particle (neutrino, CDM and baryon) simulations.

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