Strong Cosmic Censorship in Two Dimensions

Abstract

We study the behaviour of a free massive scalar wave-packet near the Cauchy horizon of an ${\mathrm{AdS}}_2$ black hole and find that it becomes infinitely differentiable for smooth initial data, independently of the parameters describing the spacetime or the scalar. This indicates a violation of the strong cosmic censorship conjecture at the classical level. We discuss our result in connection with some recent observations of violation of the conjecture for certain nearly extremal black holes.

arXiv comment13 pages, 1 figure v2: Title changed, reference added; approximates the published Letter

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Cited by in corpus (5)

• Strong Cosmic Censorship in light of Weak Gravity Conjecture for Charged Black Holes
• Scalar perturbations of black holes in Jackiw-Teitelboim gravity
• Interior Quasinormal Modes and Strong Cosmic Censorship
• Bianchi IX geometry and the Einstein-Maxwell theory
• Self-Similar Gravitational Dynamics, Singularities and Criticality in 2D