Scalar and vector perturbations in a universe with nonlinear perfect fluid

Scalar and vector perturbations in a universe with nonlinear perfect fluid

Abstract We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear equations of state. Within the cosmic screening approach, we develop the theory of scalar and vector perturbatio...

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Main Authors: Ezgi Canay, Ruslan Brilenkov, Maxim Eingorn, A. Savaş Arapoğlu, Alexander Zhuk
Format: Article
Language:English
Published: SpringerOpen 2021-03-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-021-09032-9
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spelling doaj-1357b63bb673477eaad7b05067a46b962021-03-21T12:46:24ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-03-0181311110.1140/epjc/s10052-021-09032-9Scalar and vector perturbations in a universe with nonlinear perfect fluidEzgi Canay0Ruslan Brilenkov1Maxim Eingorn2A. Savaş Arapoğlu3Alexander Zhuk4Department of Physics, Istanbul Technical UniversityKapteyn Astronomical Institute, University of GroningenDepartment of Mathematics and Physics, North Carolina Central UniversityDepartment of Physics, Istanbul Technical UniversityAstronomical Observatory, Odessa I.I. Mechnikov National UniversityAbstract We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear equations of state. Within the cosmic screening approach, we develop the theory of scalar and vector perturbations. None of the energy density contrasts associated with the distinct components is treated as small. Consequently, the derived equations are valid at both sub- and super-horizon scales and enable simulations for a variety of cosmological models.https://doi.org/10.1140/epjc/s10052-021-09032-9
collection DOAJ
language English
format Article
sources DOAJ
author Ezgi Canay
Ruslan Brilenkov
Maxim Eingorn
A. Savaş Arapoğlu
Alexander Zhuk
spellingShingle Ezgi Canay
Ruslan Brilenkov
Maxim Eingorn
A. Savaş Arapoğlu
Alexander Zhuk
Scalar and vector perturbations in a universe with nonlinear perfect fluid
European Physical Journal C: Particles and Fields
author_facet Ezgi Canay
Ruslan Brilenkov
Maxim Eingorn
A. Savaş Arapoğlu
Alexander Zhuk
author_sort Ezgi Canay
title Scalar and vector perturbations in a universe with nonlinear perfect fluid
title_short Scalar and vector perturbations in a universe with nonlinear perfect fluid
title_full Scalar and vector perturbations in a universe with nonlinear perfect fluid
title_fullStr Scalar and vector perturbations in a universe with nonlinear perfect fluid
title_full_unstemmed Scalar and vector perturbations in a universe with nonlinear perfect fluid
title_sort scalar and vector perturbations in a universe with nonlinear perfect fluid
publisher SpringerOpen
series European Physical Journal C: Particles and Fields
issn 1434-6044
1434-6052
publishDate 2021-03-01
description Abstract We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear equations of state. Within the cosmic screening approach, we develop the theory of scalar and vector perturbations. None of the energy density contrasts associated with the distinct components is treated as small. Consequently, the derived equations are valid at both sub- and super-horizon scales and enable simulations for a variety of cosmological models.
url https://doi.org/10.1140/epjc/s10052-021-09032-9
work_keys_str_mv AT ezgicanay scalarandvectorperturbationsinauniversewithnonlinearperfectfluid
AT ruslanbrilenkov scalarandvectorperturbationsinauniversewithnonlinearperfectfluid
AT maximeingorn scalarandvectorperturbationsinauniversewithnonlinearperfectfluid
AT asavasarapoglu scalarandvectorperturbationsinauniversewithnonlinearperfectfluid
AT alexanderzhuk scalarandvectorperturbationsinauniversewithnonlinearperfectfluid
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