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arXiv · 1807.03701

A new approach to cosmological structure formation with massive neutrinos

Christian Fidler·Alexander Kleinjohann·Thomas Tram·Cornelius Rampf·Kazuya Koyama
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Abstract

We show how Newtonian cosmological simulations can be employed to investigate the non-linear evolution of two particle species in a relativistic context. We discuss the application for massive neutrinos and other multi-species systems such as Cold Dark Matter (CDM) plus baryons or Warm Dark Matter (WDM). We propose a method that allows us to perform simulations including massive neutrinos and general relativistic effects at almost the same computational cost as ordinary CDM only N-body simulations, employing tailor-made initial conditions and a dictionary for the interpretation of the simulation output.

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Christian Fidler, Alexander Kleinjohann, Thomas Tram, Cornelius Rampf, Kazuya Koyama. 2018-07-10. A new approach to cosmological structure formation with massive neutrinos. https://doi.org/10.1088/1475-7516%2F2019%2F01%2F025

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