A new approach to cosmological structure formation with massive neutrinos

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  • Christian Fidler, RWTH Aachen University
  • ,
  • Alexander Kleinjohann, RWTH Aachen University
  • ,
  • Thomas Tram
  • ,
  • Cornelius Rampf, Universität Heidelberg
  • ,
  • Kazuya Koyama, University of Portsmouth

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 number25
JournalJournal of Cosmology and Astroparticle Physics
Volume2019
Issue1
Pages (from-to)1-28
ISSN1475-7516
DOIs
Publication statusPublished - 11 Jan 2019

    Research areas

  • CODE, MATTER, cosmological neutrinos, cosmological parameters from LSS, cosmological simulations, neutrino masses from cosmology

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