Bouncing Cosmologies

Details Bouncing Cosmologies Bouncing Cosmologies

2008-02-12

arxiv.org/abs/0802.1634v1

Phys.Rept.463:127-213,2008

Astronomy and Astrophysics

Astrophysics

Please send comments to novello@cbpf.br with copy to sepbergliaffa@gmail.com

Scientific paper

10.1016/j.physrep.2008.04.006

We review the general features of nonsingular universes ({\em i.e.} those that go from an era of accelerated collapse to an expanding era without displaying a singularity) as well as cyclic universes. We discuss the mechanisms behind the bounce, and analyze examples of solutions that implement these mechanisms. Observational consequences of such regular cosmologies are also considered, with emphasis in the behavior of the perturbations.

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