Perturbation Growth in Anisotropic Cosmologies
High Energy Physics - Theory
2010-02-03 v3
Abstract
We study the growth of perturbations in an expanding Bianchi type-I metric that evolves according to an energy density that includes dust and a cosmological constant. Assuming an epoch where the cosmological constant is subdominant, we find that, for a reasonably large set of initial conditions, the metric fluctuations grow fast enough to make the metric inhomogeneous before the cosmological constant becomes the dominant form of energy. We have examined values for the cosmological constant that are in the interval to .
Cite
@article{arxiv.0803.2490,
title = {Perturbation Growth in Anisotropic Cosmologies},
author = {E. Dimastrogiovanni and W. Fischler and S. Paban},
journal= {arXiv preprint arXiv:0803.2490},
year = {2010}
}
Comments
18 pages, published version