Backreaction: directions of progress

Details Backreaction: directions of progress Backreaction: directions of progress

2011-02-02

arxiv.org/abs/1102.0408v2

Class. Quantum Grav. 28 (2011) 164008

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

29 pages, 4 figures, contribution to Classical and Quantum Gravity special issue "Inhomogeneous Cosmological Models and Averag

Scientific paper

10.1088/0264-9381/28/16/164008

Homogeneous and isotropic cosmological models with ordinary matter and gravity predict slower expansion and shorter distances than observed. It is possible that this failure is due the known breakdown of homogeneity and isotropy related to structure formation, rather than new fundamental physics. We review this backreaction conjecture, concentrating on topics on which there has been progress as well as open issues.

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