Suitable Initial Conditions for Newtonian Simulations with Massive Neutrinos

Abstract

Initial conditions for cosmological N-body simulations are usually calculated by rescaling the present day linear power spectrum obtained from an Einstein-Boltzmann solver to the initial time employing the scale-independent matter growth function. For the baseline Lambda-CDM model, this has been shown to be consistent with General Relativity (GR) even in the presence of relativistic species such as photons. We show that this approach is not feasible in cosmologies with massive neutrinos and present an alternative method employing the Newtonian motion gauge framework.

arXiv comment10 pages, 4 figures

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Cited by in corpus (6)

• Higher-order initial conditions with massive neutrinos
• Fast simulations of cosmic large-scale structure with massive neutrinos
• A Minimal Model for Massive Neutrinos in Newtonian N-body Simulations
• Improving initialization and evolution accuracy of cosmological neutrino simulations
• Neutrinos in N-body simulations
• Charm and multi-charm baryon measurements via strangeness tracking with the upgraded ALICE detector