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arXiv · 1706.00025

Cosmological N-body simulations with generic hot dark matter

Jacob Brandbyge·Steen Hannestad
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Abstract

We have calculated the non-linear effects of generic fermionic and bosonic hot dark matter components in cosmological N-body simulations. For sub-eV masses, the non-linear power spectrum suppression caused by thermal free-streaming resembles the one seen for massive neutrinos, whereas for masses larger than 1eV, the non-linear relative suppression of power is smaller than in linear theory. We furthermore find that in the non-linear regime, one can map fermionic to bosonic models by performing a simple transformation.

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Jacob Brandbyge, Steen Hannestad. 2017-05-31. Cosmological N-body simulations with generic hot dark matter. https://doi.org/10.1088/1475-7516%2F2017%2F10%2F015

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