Singularity avoidance in quantum-inspired inhomogeneous dust collapse

Yue Liu, Daniele Malafarina, Leonardo Modesto, Cosimo Bambi

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number044040
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume90
Issue number4
DOIs
Publication statusPublished - Aug 15 2014

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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