Redshift-space distortions in massive neutrino and evolving dark energy cosmologies

Abstract

Large-scale structure surveys in the coming years will measure the redshift-space power spectrum to unprecedented accuracy, allowing for powerful new tests of the LambdaCDM picture as well as measurements of particle physics parameters such as the neutrino masses. We extend the Time-RG perturbative framework to redshift space, computing the power spectrum P_s(k,mu) in massive neutrino cosmologies with time-dependent dark energy equations of state w(z). Time-RG is uniquely capable of incorporating scale-dependent growth into the P_s(k,mu) computation, which is important for massive neutrinos as well as modified gravity models. Although changes to w(z) and the neutrino mass fraction both affect the late-time scale-dependence of the non-linear power spectrum, we find that the two effects depend differently on the line-of-sight angle mu. Finally, we use the HACC N-body code to quantify errors in the perturbative calculations. For a LambdaCDM model at redshift z=1, our procedure predicts the monopole~(quadrupole) to 1% accuracy up to a wave number 0.19h/Mpc (0.28h/Mpc), compared to 0.08h/Mpc (0.07h/Mpc) for the Kaiser approximation and 0.19h/Mpc (0.16h/Mpc) for the current state-of-the-art perturbation scheme. Our calculation agrees with the simulated redshift-space power spectrum even for neutrino masses above the current bound, and for rapidly-evolving dark energy equations of state, |dw/dz| ~ 1. Along with this article, we make our redshift-space Time-RG implementation publicly available as the code redTime.

18 pages, 17 figures, 4 tables. Matches version accepted by PRD. redTime code available at http://www.hep.anl.gov/cosmology/pert.html

References in corpus (9)

• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• A critical look at cosmological perturbation theory techniques
• Flowing with Time: a New Approach to Nonlinear Cosmological Perturbations
• DEMNUni: The clustering of large-scale structures in the presence of massive neutrinos
• A Closure Theory for Non-linear Evolution of Cosmological Power Spectra
• Impact of massive neutrinos on nonlinear matter power spectrum
• Structure formation with massive neutrinos: going beyond linear theory
• Chasing the non-linear evolution of matter power spectrum with numerical resummation method: solution of closure equations
• Trapped Quintessential Inflation

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