Terminating black holes in asymptotically free quantum gravity

Cosimo Bambi, Daniele Malafarina, Leonardo Modesto

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

We study the homogeneous gravitational collapse of a spherical cloud of matter in a super-renormalizable and asymptotically free theory of gravity. We find a picture that differs substantially from the classical scenario. The central singularity appearing in classical general relativity is replaced by a bounce, after which the cloud re-expands indefinitely. We argue that a black hole, strictly speaking, never forms. The collapse only generates a temporary trapped surface, which can be interpreted as a black hole when the observational timescale is much shorter than the one of the collapse. However, it may also be possible that the gravitational collapse produces a black hole and that after the bounce the original cloud of matter evolves into a new universe.

Original languageEnglish
Article number2767
Pages (from-to)1-10
Number of pages10
JournalEuropean Physical Journal C
Volume74
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

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Relativity
stopping
Gravitation
gravitational collapse
gravitation
relativity
universe

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Engineering (miscellaneous)

Cite this

Terminating black holes in asymptotically free quantum gravity. / Bambi, Cosimo; Malafarina, Daniele; Modesto, Leonardo.

In: European Physical Journal C, Vol. 74, No. 2, 2767, 2014, p. 1-10.

Research output: Contribution to journalArticle

Bambi, Cosimo ; Malafarina, Daniele ; Modesto, Leonardo. / Terminating black holes in asymptotically free quantum gravity. In: European Physical Journal C. 2014 ; Vol. 74, No. 2. pp. 1-10.
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