Back Reaction from Walls
Cosmology and Nongalactic Astrophysics
2012-02-28 v2 General Relativity and Quantum Cosmology
Abstract
We study the distance-redshift relation in a universe filled with 'walls' of pressure-less dust separated by under dense regions. We show that as long as the density contrast of the walls is small, or the diameter of the under dense regions is much smaller than the Hubble scale, the distance-redshift relation remains close to what is obtained in a Friedmann universe. However, when arbitrary density contrasts are allowed, every prescribed distance-redshift relation can be reproduced with such models.
Keywords
Cite
@article{arxiv.1111.5764,
title = {Back Reaction from Walls},
author = {Enea Di Dio and Marc Vonlanthen and Ruth Durrer},
journal= {arXiv preprint arXiv:1111.5764},
year = {2012}
}
Comments
26 pages, 9 figures