Effective description of dark matter as a viscous fluid

Treating dark matter at large scales as an effectively viscous fluid provides an improved framework for the calculation of the density and velocity power spectra compared to the standard assumption of an ideal pressureless fluid. We discuss how this framework can be made concrete through an appropri...

Descripción completa

Detalles Bibliográficos
Autores principales: Floerchinger, S., Garny, M., Tetradis, N., Wiedemann, U.A.
Lenguaje:eng
Publicado: 2016
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1051/epjconf/201612503018
http://cds.cern.ch/record/2215185
_version_ 1780952014039023616
author Floerchinger, S.
Garny, M.
Tetradis, N.
Wiedemann, U.A.
author_facet Floerchinger, S.
Garny, M.
Tetradis, N.
Wiedemann, U.A.
author_sort Floerchinger, S.
collection CERN
description Treating dark matter at large scales as an effectively viscous fluid provides an improved framework for the calculation of the density and velocity power spectra compared to the standard assumption of an ideal pressureless fluid. We discuss how this framework can be made concrete through an appropriate coarse-graining procedure. We also review results that demonstrate that it improves the convergence of cosmological perturbation theory.
id cern-2215185
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-22151852021-05-03T20:13:57Zdoi:10.1051/epjconf/201612503018http://cds.cern.ch/record/2215185engFloerchinger, S.Garny, M.Tetradis, N.Wiedemann, U.A.Effective description of dark matter as a viscous fluidAstrophysics and AstronomyTreating dark matter at large scales as an effectively viscous fluid provides an improved framework for the calculation of the density and velocity power spectra compared to the standard assumption of an ideal pressureless fluid. We discuss how this framework can be made concrete through an appropriate coarse-graining procedure. We also review results that demonstrate that it improves the convergence of cosmological perturbation theory.Treating dark matter at large scales as an effectively viscous fluid provides an improved framework for the calculation of the density and velocity power spectra compared to the standard assumption of an ideal pressureless fluid. We discuss how this framework can be made concrete through an appropriate coarse-graining procedure. We also review results that demonstrate that it improves the convergence of cosmological perturbation theory.arXiv:1609.03466oai:cds.cern.ch:22151852016-09-12
spellingShingle Astrophysics and Astronomy
Floerchinger, S.
Garny, M.
Tetradis, N.
Wiedemann, U.A.
Effective description of dark matter as a viscous fluid
title Effective description of dark matter as a viscous fluid
title_full Effective description of dark matter as a viscous fluid
title_fullStr Effective description of dark matter as a viscous fluid
title_full_unstemmed Effective description of dark matter as a viscous fluid
title_short Effective description of dark matter as a viscous fluid
title_sort effective description of dark matter as a viscous fluid
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1051/epjconf/201612503018
http://cds.cern.ch/record/2215185
work_keys_str_mv AT floerchingers effectivedescriptionofdarkmatterasaviscousfluid
AT garnym effectivedescriptionofdarkmatterasaviscousfluid
AT tetradisn effectivedescriptionofdarkmatterasaviscousfluid
AT wiedemannua effectivedescriptionofdarkmatterasaviscousfluid

Ejemplares similares