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Scientific article
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English

Backreaction in the Lemaitre-Tolman-Bondi model

ContributorsRasanen, Syksy
Published inJournal of cosmology and astroparticle physics, vol. 10, no. 0411, 11
Publication date2004
Abstract

We study backreaction analytically using the parabolic Lemaˆıtre-Tolman-Bondi universe as a toy model. We calculate the average expansion rate and energy density on two different hypersurfaces and compare the results. We also consider the Hubble law and find that backreaction slows down the expansion if measured with proper time, but speeds it up if measured with energy density.

Keywords
  • gravity
  • mean mass density
Citation (ISO format)
RASANEN, Syksy. Backreaction in the Lemaitre-Tolman-Bondi model. In: Journal of cosmology and astroparticle physics, 2004, vol. 10, n° 0411, p. 11. doi: 10.1088/1475-7516/2004/11/010
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Article (Accepted version)
accessLevelPublic
Identifiers
ISSN of the journal1475-7516
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Technical informations

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