Scalar field collapse with negative cosmological constant

Oct 13, 2014
16 pages
Published in:
  • Class.Quant.Grav. 32 (2015) 13, 135021
  • Published: Jun 12, 2015
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Abstract: (IOP)
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.
Note:
  • 16 pages, 6 figures, v2: minor modifications, references added
  • 16 pages, 6 figures, v3: final version to be published in Class. Quantum Grav
  • scalar field collapse
  • black holes
  • naked singularity
  • cosmological constant: negative
  • field theory: scalar
  • cosmic censorship: violation
  • black hole: formation
  • dimension: 4
  • singularity: formation
  • collapse