Dark energy from back-reaction

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http://hdl.handle.net/10138/310208

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Räsänen , S 2004 , ' Dark energy from back-reaction ' , Journal of Cosmology and Astroparticle Physics , vol. 2004 , no. 02 , pp. 3 . https://doi.org/10.1088/1475-7516/2004/02/003

Title: Dark energy from back-reaction
Author: Räsänen, Syksy
Contributor: University of Helsinki, Department of Physics
Date: 2004-02-02
Language: eng
Number of pages: 1
Belongs to series: Journal of Cosmology and Astroparticle Physics
ISSN: 1475-7516
URI: http://hdl.handle.net/10138/310208
Abstract: We consider the effect of inhomogeneities on the expansion of the Einstein–de Sitter universe. We find that the back-reaction of linear scalar metric perturbations results in apparent dark energy with a mixture of equations of state between 0 and -4/3. We discuss the possibility that back-reaction could account for present-day acceleration.
Subject: 114 Physical sciences
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