Scalar and vector perturbations in a universe with nonlinear perfect fluid

Ezgi Canay*, Ruslan Brilenkov, Maxim Eingorn, A. Savaş Arapoğlu, Alexander Zhuk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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.

Original languageEnglish
Article number246
JournalEuropean Physical Journal C
Volume81
Issue number3
DOIs
Publication statusPublished - Mar 2021

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© 2021, The Author(s).

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