The Averaging Problem in Cosmology

Details The Averaging Problem in Cosmology The Averaging Problem in Cosmology

2009-06-17

arxiv.org/abs/0906.3165v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

126 pages, PhD thesis; some typos fixed, one reference added

Scientific paper

This thesis deals with the averaging problem in cosmology, which has gained considerable interest in recent years, and is concerned with correction terms (after averaging inhomogeneities) that appear in the Einstein equations when working on the large scales appropriate for cosmology. It has been claimed in the literature that these terms may account for the phenomenon of dark energy which causes the late time universe to accelerate. We investigate the nature of these terms by using averaging schemes available in the literature and further developed to be applicable to the problem at hand. We show that the effect of these terms when calculated carefully, remains negligible and cannot explain the late time acceleration.

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