k-essence in the DGP brane-world cosmology

Details k-essence in the DGP brane-world cosmology k-essence in the DGP brane-world cosmology

2010-07-23

arxiv.org/abs/1007.4141v2

Phys.Rev.D82:103506,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, RevTeX 4-1. References added. Version to appear in PRD

Scientific paper

10.1103/PhysRevD.82.103506

We analyse a DGP brane filled with a k-essence field and assume the k-field evolving linearly with the cosmic time of the brane. We then solve analytically the Friedmann equation and deduce the different behaviour of the brane at the low and the high energy regimes. The asymptotic behaviour can be quite different involving accelerating branes, big bangs, big crunches, big rips or quiescent singularities. The latter correspond to a type of sudden singularity.

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