Abstract

Non-minimally coupling a scalar field to gravity introduces an additional curvature term into the action which can change the general behaviour in strong curvature regimes, in particular close to classical singularities. While one can conformally transform any non-minimal model to a minimally coupled one, that transformation can itself become singular. It is thus not guaranteed that all qualitative properties are shared by minimal and non-minimal models. This paper addresses the classical singularity issue in isotropic models and extends singularity removal in quantum gravity to non-minimal models.

Original languageEnglish (US)
Article number016
Pages (from-to)4983-4990
Number of pages8
JournalClassical and Quantum Gravity
Volume23
Issue number15
DOIs
StatePublished - Aug 7 2006

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scalars
curvature
gravitation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Singularities in isotropic non-minimal scalar field models",
abstract = "Non-minimally coupling a scalar field to gravity introduces an additional curvature term into the action which can change the general behaviour in strong curvature regimes, in particular close to classical singularities. While one can conformally transform any non-minimal model to a minimally coupled one, that transformation can itself become singular. It is thus not guaranteed that all qualitative properties are shared by minimal and non-minimal models. This paper addresses the classical singularity issue in isotropic models and extends singularity removal in quantum gravity to non-minimal models.",
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}

Singularities in isotropic non-minimal scalar field models. / Bojowald, Martin; Kagan, Mikhail A.

In: Classical and Quantum Gravity, Vol. 23, No. 15, 016, 07.08.2006, p. 4983-4990.

Research output: Contribution to journalArticle

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