Assessing the impact of bulk and shear viscosities on large scale structure formation

Autor:	Hermano Velten, J. C. Fabris, C. M. S. Barbosa, Rudnei O. Ramos
Rok vydání:	2017
Předmět:	High Energy Physics - Theory Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Structure formation 010308 nuclear & particles physics Shear viscosity FOS: Physical sciences Perturbation (astronomy) Thermodynamics General Relativity and Quantum Cosmology (gr-qc) Volume viscosity 01 natural sciences General Relativity and Quantum Cosmology Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Nonlinear system High Energy Physics - Theory (hep-th) Shear (geology) 0103 physical sciences Scale structure Statistical analysis 010303 astronomy & astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	Physical Review D. 96
ISSN:	2470-0029 2470-0010
Popis:	It is analyzed the effects of both bulk and shear viscosities on the perturbations, relevant for structure formation in late time cosmology. It is shown that shear viscosity can be as effective as the bulk viscosity on suppressing the growth of perturbations and delaying the nonlinear regime. A statistical analysis of the shear and bulk viscous effects is performed and some constraints on these viscous effects are given. V2. Final version
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84baa239e2f41030cc43b379dcd2ae5b https://doi.org/10.1103/physrevd.96.023527 Zobrazit plný text záznamu