Singularity avoidance in quantum-inspired inhomogeneous dust collapse - INSPIRE

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Singularity avoidance in quantum-inspired inhomogeneous dust collapse

May 28, 2014

9 pages

Published in:

Phys.Rev.D 90 (2014) 4, 044040

Published: Aug 15, 2014

e-Print:

1405.7249 [gr-qc]

DOI:

10.1103/PhysRevD.90.044040

View in:

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Abstract: (APS)

In a previous paper, some of us studied general relativistic homogeneous gravitational collapses for dust and radiation, in which the density profile was replaced by an effective density justified by some quantum gravity models. It was found that the effective density introduces an effective pressure that becomes negative and dominant in the strong-field regime. With this setup, the central singularity is replaced by a bounce, after which the cloud starts expanding. Motivated by the fact that in the classical case homogeneous and inhomogeneous collapse models have different properties, here we extend our previous work to the inhomogeneous case. As in the quantum-inspired homogeneous collapse model, the classical central singularity is replaced by a bounce, but the inhomogeneities strongly affect the structure of the bounce curve and of the trapped region.

Note:

8 pages, 5 figures. v2: refereed version

04.20.Dw
04.20.Jb
04.70.Bw
model: collapse
quantum gravity: model
gravitation: collapse
singularity
density
bounce
general relativity

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