Can a dust dominated universe have accelerated expansion?

Details Can a dust dominated universe have accelerated expansion? Can a dust dominated universe have accelerated expansion?

2005-06-20

arxiv.org/abs/astro-ph/0506449v4

JCAP 0701:007,2007

Astronomy and Astrophysics

Astrophysics

9 pages, 1 figure. v3: Paper shortened and updated. References added. v4: Minor LATEX problem fixed. Submitted to JCAP

Scientific paper

10.1088/1475-7516/2007/01/007

Recently, there has been suggestions that the apparent accelerated expansion of the universe is due not to a cosmological constant, but rather to inhomogeneities in the distribution of matter. In this work, we investigate a specific class of inhomogeneous models that can be solved analytically, namely the dust-dominated Lemaitre-Tolman-Bondi universe models. We show that they do not permit accelerated cosmic expansion.

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