Structure formation as an alternative to dark energy and modified gravity
Astrophysics
2012-05-01 v1 General Relativity and Quantum Cosmology
Abstract
Observations are inconsistent with a homogeneous and isotropic universe with ordinary matter and gravity. The universe is far from exact homogeneity and isotropy at late times, and the effect of the non-linear structures has to be quantified before concluding that new physics is needed. We explain how structure formation can lead to accelerated expansion, and discuss a semi-realistic model where the timescale of the change in the expansion rate emerges from the physics of structure formation.
Cite
@article{arxiv.0811.2364,
title = {Structure formation as an alternative to dark energy and modified gravity},
author = {Syksy Rasanen},
journal= {arXiv preprint arXiv:0811.2364},
year = {2012}
}
Comments
12 pages, 4 figures, contribution to the proceedings of the July 2008 CRAL-IPNL conference "Dark Energy and Dark Matter"