Worse than a big rip?
General Relativity and Quantum Cosmology
2008-11-26 v2
Abstract
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.
Cite
@article{arxiv.gr-qc/0612135,
title = {Worse than a big rip?},
author = {Mariam Bouhmadi-Lopez and Pedro F. Gonzalez-Diaz and Prado Martin-Moruno},
journal= {arXiv preprint arXiv:gr-qc/0612135},
year = {2008}
}
Comments
6 pages, 4 figures, RevTeX 4. Discussion expanded and references added. Version to appear in PLB