arXiv 1111.57642011-11astro-ph.COgr-qc

Back Reaction from Walls

Enea Di Dio, Marc Vonlanthen, Ruth Durrer

备注：: 26 pages, 9 figures
发表信息：: JCAP02(2012)036
DOI：: 10.1088/1475-7516/2012/02/036

英文摘要：

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.

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