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.
Original languageEnglish
Article number025
Number of pages29
JournalJournal of Cosmology and Astroparticle Physics
Volume2019
Issue numberJanuary 2019
DOIs
Publication statusPublished - 11 Jan 2019

Keywords

  • astro-ph.CO
  • RCUK
  • STFC
  • ST/N000668/1

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