Black hole singularities: a new critical phenomenon

Details Black hole singularities: a new critical phenomenon Black hole singularities: a new critical phenomenon

2002-09-23

arxiv.org/abs/gr-qc/0209084v3

Phys.Rev.Lett.90:121101,2003; Erratum-ibid.90:249902,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 5 eps figures; An Erratum is added. The main conclusions of the original Letter are unchanged

Scientific paper

10.1103/PhysRevLett.90.121101

The singularitiy inside a spherical charged black hole, coupled to a spherical, massless scalar field is studied numerically. The profile of the characteristic scalar field was taken to be a power of advanced time with an exponent $\alpha>0$. A critical exponent $\alpha_{\rm crit}$ exists. For exponents below the critical one ($\alpha<\alpha_{\rm crit}$) the singularity is a union of spacelike and null sectors, as is also the case for data with compact support. For exponents greater than the critical one ($\alpha>\alpha_{\rm crit}$) an all-encompassing, spacelike singularity evolves, which completely blocks the ``tunnel'' inside the black hole, preventing the use of the black hole as a portal for hyperspace travel.

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