Different faces of the phantom

Details Different faces of the phantom Different faces of the phantom

2006-11-06

arxiv.org/abs/gr-qc/0611038v1

J.Phys.A40:6835-6840,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, presented at IRGAC 2006, Barcelona, 11-15 July 2006

Scientific paper

10.1088/1751-8113/40/25/S27

The SNe type Ia data admit that the Universe today may be dominated by some exotic matter with negative pressure violating all energy conditions. Such exotic matter is called {\it phantom matter} due to the anomalies connected with violation of the energy conditions. If a phantom matter dominates the matter content of the universe, it can develop a singularity in a finite future proper time. Here we show that, under certain conditions, the evolution of perturbations of this matter may lead to avoidance of this future singularity (the Big Rip). At the same time, we show that local concentrations of a phantom field may form, among other regular configurations, black holes with asymptotically flat static regions, separated by an event horizon from an expanding, singularity-free, asymptotically de Sitter universe.

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