Scalar field critical collapse in 2+1 dimensions

Oct 9, 2015
27 pages
Published in:
  • Phys.Rev.D 92 (2015) 12, 124044
  • Published: Dec 21, 2015
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Abstract: (APS)
We carry out numerical experiments in the critical collapse of a spherically symmetric massless scalar field in 2+1 spacetime dimensions in the presence of a negative cosmological constant and compare them against a new theoretical model. We approximate the true critical solution as the n=4 Garfinkle solution, matched at the light cone to a Vaidya-like solution, and corrected to leading order for the effect of Λ<0. This approximation is only C3 at the light cone and has three growing modes. We conjecture that pointwise it is a good approximation to a yet unknown true critical solution that is analytic with only one growing mode (itself approximated by the top mode of our amended Garfinkle solution). With this conjecture, we predict a Ricci-scaling exponent of γ=8/7 and a mass-scaling exponent of δ=16/23, compatible with our numerical experiments.
Note:
  • 27 pages
  • 04.20.Dw
  • dimension: 3
  • space-time: Vaidya
  • black hole
  • field theory: scalar
  • symmetry: rotation
  • cosmological constant: negative
  • collapse
  • field equations: solution
  • critical phenomena