Scalar field collapse with negative cosmological constant

The formation of black holes or naked singularities is studied in a model in which a homogeneous time-dependent scalar field with an exponential potential couples to four-dimensional gravity with negative cosmological constant. An analytic solution is derived and its consequences are discussed. The...

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Published inClassical and quantum gravity Vol. 32; no. 13; pp. 135021 - 135036
Main Authors Baier, R, Nishimura, H, Stricker, S A
Format Journal Article
LanguageEnglish
Published IOP Publishing 09.07.2015
Subjects
black holes
Collapse
Cosmological constant
Formations
Mathematical models
Naked singularities
naked singularity
Quantum gravity
scalar field collapse
Scalars
Tuning
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Summary:The formation of black holes or naked singularities is studied in a model in which a homogeneous time-dependent scalar field with an exponential potential couples to four-dimensional gravity with negative cosmological constant. An analytic solution is derived and its consequences are discussed. The model depends only on one free parameter, which determines the equation of state and decides the fate of the spacetime. Without fine tuning the value of this parameter the collapse ends in a generic formation of a black hole or a naked singularity. The latter case violates the cosmic censorship conjecture.
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ISSN:0264-9381
1361-6382
DOI:10.1088/0264-9381/32/13/135021