Cosmological models with variable cosmological and gravitational ``constants'' and bulk viscous models
type: Item
instance of: scholarly article
title: Cosmological models with variable cosmological and gravitational ``constants'' and bulk viscous models
zbMATH Open document ID: 0873.53076
DOI: 10.1023/A:1010252130608
author: Arbab I. Arbab
published in: General Relativity and Gravitation
publication date: 1997-10-26T00:00:00Z
review text: A viscous model with variable gravitational and cosmological constants is considered in Robertson-Walker-Friedmann (FRW) spacetime and several solutions are obtained. These solutions are of power law-type. In contrast to \textit{A. Beesham's} solution with \(n={1\over 2}\) [Phys. Rev. D 48, No. 8, 3539-3543 (1993)], these solutions satisfy the relation between bulk viscosity \(\eta\) and matter density \(\rho\) as \(\eta\propto\rho^n\) for any value of \(n\).
Mathematics Subject Classification ID: 53Z05
Mathematics Subject Classification ID: 83F05
zbMATH DE Number: 987749
zbMATH Keywords: variable gravitational and cosmological constants
zbMATH Keywords: bulk viscosity
zbMATH Keywords: matter density
MaRDI profile type: Publication
cites work: Cosmological models with variable gravitational and cosmological ``constants''
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cites work: Solutions to the field equations and the deceleration parameter
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full work available at URL: a:1010252130608
OpenAlex ID: W350028017
description: scientific article; zbMATH DE number 987749