Scalar perturbations and the possible self-destruction of the phantom menace

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Some analysis of the supernovae type Ia observational data seems to indicate that the Universe today is dominated by a phantom field, for which all energy conditions are violated. Such phantom field may imply a singularity in a future finite time, called big rip. Studying the evolution of scalar perturbations for such a field, we show that if the pressure is negative enough, the Universe can become highly inhomogeneous and this phantom menace may be avoided.
Latex file, 5 pages

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Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/177291

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0603171
 http://arxiv.org/abs/astro-ph/0603171
 Phys.Rev.D74:027301,2006
 doi:10.1103/PhysRevD.74.027301

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arXiv