Backreaction in the Lemaitre-Tolman-Bondi model -: art. no. 010

被引：45

作者：

Räsänen, S ^{[1
]}

机构：

[1] Univ Oxford, Oxford OX1 3NP, England

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2004年 / 11期

关键词：

gravity; mean mass density;

D O I：

10.1088/1475-7516/2004/11/010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study backreaction analytically using the parabolic Lemaitre-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.

引用

页码：147 / 157

页数：11

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