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Strong Cosmic Censorship in Kerr-Newman-de Sitter

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arxiv 2404.03724 v1 pith:6WCD4NK4 submitted 2024-04-04 gr-qc hep-th

Alex Davey , Oscar J.C. Dias , David Sola Gil This is my paper · ORCID
classification gr-qchep-th
keywords sitterblackholeskerr-newman-deom-dereissner-nordstrkerr-demodes
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Christodoulou's formulation of Strong Cosmic Censorship (SCC) holds true for Kerr-de Sitter black holes. On the other hand, Reissner-Nordstr\"om-de Sitter black holes violate SCC. We do a detailed scan of the parameter space of Kerr-Newman-de Sitter black holes between these two limiting families, to identify the boundary that marks the transition between solutions that respect and violate SCC. We focus our attention on linear scalar field perturbations. SCC is violated inside a (roughly) `spherical' shell of the parameter space of Kerr-Newman-de Sitter, centred at the corner that describes arbitrarily small extremal Reissner-Nordstr\"om-de Sitter solutions. Outside of this region, including the Kerr-de Sitter limit, we identify perturbation modes that decay slow enough to enforce SCC. Additionally, we do a necessary study of the quasinormal mode spectra of Kerr-Newman-de Sitter in some detail. As established in the literature, in the Kerr-de Sitter and Reissner-Nordstr\"om-de Sitter limits, we find three families of modes: de Sitter, photon sphere and near-horizon modes. These interact non-trivially away from the Reissner-Nordstr\"om-de Sitter limit and display eigenvalue repulsions like in Kerr-Newman black holes.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Scalar perturbations and strong cosmic censorship in a regular ABGB-de Sitter black hole spacetime

    gr-qc 2026-07 conditional novelty 6.0 of 10

    In regular ABGB-de Sitter black holes, near-extremal scalar perturbations decay fast enough (β>1/2) to violate strong cosmic censorship, and adding scalar mass can push the regularity parameter past β=1.

  2. On static and rotating decoupled black holes without inner horizons

    gr-qc 2024-12 conditional novelty 4.0 of 10

    The authors construct a family of static and rotating black hole metrics with an extra 1/r^n hair that, for negative hair parameter, removes the Cauchy horizon and makes the central singularity spacelike.

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