2008
DOI: 10.1088/1475-7516/2008/08/020
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The effect of thermal neutrino motion on the non-linear cosmological matter power spectrum

Abstract: Abstract. We have performed detailed studies of non-linear structure formation in cosmological models with light neutrinos. For the first time the effect of neutrino thermal velocities has been included in a consistent way, and the effect on the matter power spectrum is found to be significant. The effect is large enough to be measured in future, high precision surveys. Additionally, we provide a simple but accurate analytic expression for the suppression of fluctuation power due to massive neutrinos. Finally,… Show more

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Cited by 172 publications
(282 citation statements)
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“…Linear perturbation theory predicts the small-scale suppression to be, Hu et al 1998). For the non-linear power spectrum, the suppression is higher, around −10 f ν , as predicted by both numerical simulations (Brandbyge et al 2008) and one-loop corrections (Wong 2008). For the aperture mass dispersion, the models shown in Fig.…”
Section: Methodsmentioning
confidence: 73%
“…Linear perturbation theory predicts the small-scale suppression to be, Hu et al 1998). For the non-linear power spectrum, the suppression is higher, around −10 f ν , as predicted by both numerical simulations (Brandbyge et al 2008) and one-loop corrections (Wong 2008). For the aperture mass dispersion, the models shown in Fig.…”
Section: Methodsmentioning
confidence: 73%
“…Saito et al 2008Saito et al , 2009Wong 2008;Brandbyge et al 2008;Brandbyge & Hannestad 2009;Viel et al 2010;Marulli et al 2011;Bird et al 2012;Carbone et al 2012;Hou et al 2014;Lesgourgues & Pastor 2012). The renewed interest is mainly driven by the large amount of cosmological data available today, which allow placing competitive limits on the neutrino mass-scale and hierarchy.…”
Section: Revival Of Neutrino Sciencementioning
confidence: 99%
“…while on scales larger than the free streaming scale, neutrino perturbations behave like cold dark matter (see also Brandbyge et al 2008;Viel, Haehnelt & Springel 2010). The overall normalisation of the power spectrum is usually parameterised by σ8 with P ∝ σ 2 8 .…”
Section: Introductionmentioning
confidence: 99%