Gravitational collapse of homogeneous perfect fluid in HOG theories

Details Gravitational collapse of homogeneous perfect fluid in HOG theories Gravitational collapse of homogeneous perfect fluid in HOG theories

2008-11-27

arxiv.org/abs/0811.4570v1

J. Math. Phys. 50:012501,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX2e, 13 pages, 10 figures, to appear on J. Math. Phys

Scientific paper

10.1063/1.3032755

This paper investigates the evolution of collapsing FRW models with a scalar field having the potential which arises in the conformal frame of high order gravity theories, coupled to matter described by a perfect fluid with energy density $\rho$ and pressure $p$, obeying a barotropic equation of state. The solutions are shown to evolve generically to a singular state in a finite time and they are used as sources for radiating objects undergoing complete gravitational collapse. Although these singularities may be naked in some special case, it is shown that generically a black hole forms.

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