Worse than a big rip?

Details Worse than a big rip? Worse than a big rip?

2006-12-21

arxiv.org/abs/gr-qc/0612135v2

Phys.Lett.B659:1-5,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 4 figures, RevTeX 4. Discussion expanded and references added. Version to appear in PLB

Scientific paper

10.1016/j.physletb.2007.10.079

We show that a generalised phantom Chaplygin gas can present a future singularity in a finite future cosmic time. Unlike the big rip singularity, this singularity happens for a finite scale factor, but like the big rip singularity, it would also take place at a finite future cosmic time. In addition, we define a dual of the generalised phantom Chaplygin gas which satisfies the null energy condition. Then, in a Randall-Sundrum 1 brane-world scenario, we show that the same kind of singularity at a finite scale factor arises for a brane filled with a dual of the generalised phantom Chaplygin gas.

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