Strong Cosmic Censorship in the presence of matter: the decisive effect of horizon oscillations on the black hole interior geometry

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Hauptverfasser: Kehle, Christoph, Van de Moortel, Maxime
Format: Preprint
Veröffentlicht: 2021
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author Kehle, Christoph
Van de Moortel, Maxime
author_facet Kehle, Christoph
Van de Moortel, Maxime
contents Motivated by the Strong Cosmic Censorship Conjecture in the presence of matter, we study the Einstein equations coupled with a charged/massive scalar field with spherically symmetric characteristic data relaxing to a Reissner-Nordström event horizon. Contrary to the vacuum case, the relaxation rate is conjectured to be slow (non-integrable), opening the possibility that the matter fields and the metric coefficients blow up in amplitude at the Cauchy horizon, not just in energy. We show that whether this blow-up in amplitude occurs or not depends on a novel oscillation condition on the event horizon which determines whether or not a resonance is excited dynamically. If the oscillation condition is satisfied, then the resonance is not excited and we show boundedness and continuous extendibility of the matter fields and the metric across the Cauchy horizon. If the oscillation condition is violated, then by the combined effect of slow decay and the resonance being excited, we show that the massive uncharged scalar field blows up in amplitude. In our companion paper, we show that in the latter case a novel null contraction singularity forms at the Cauchy horizon, across which the metric is not continuously extendible in the usual sense. Heuristic arguments in the physics literature indicate that the oscillation condition should be satisfied generically on the event horizon. If these heuristics are true, then our result falsifies the $C^0$-formulation of Strong Cosmic Censorship by means of oscillations.
format Preprint
id arxiv_https___arxiv_org_abs_2105_04604
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle Strong Cosmic Censorship in the presence of matter: the decisive effect of horizon oscillations on the black hole interior geometry
Kehle, Christoph
Van de Moortel, Maxime
General Relativity and Quantum Cosmology
Mathematical Physics
Analysis of PDEs
Differential Geometry
Motivated by the Strong Cosmic Censorship Conjecture in the presence of matter, we study the Einstein equations coupled with a charged/massive scalar field with spherically symmetric characteristic data relaxing to a Reissner-Nordström event horizon. Contrary to the vacuum case, the relaxation rate is conjectured to be slow (non-integrable), opening the possibility that the matter fields and the metric coefficients blow up in amplitude at the Cauchy horizon, not just in energy. We show that whether this blow-up in amplitude occurs or not depends on a novel oscillation condition on the event horizon which determines whether or not a resonance is excited dynamically. If the oscillation condition is satisfied, then the resonance is not excited and we show boundedness and continuous extendibility of the matter fields and the metric across the Cauchy horizon. If the oscillation condition is violated, then by the combined effect of slow decay and the resonance being excited, we show that the massive uncharged scalar field blows up in amplitude. In our companion paper, we show that in the latter case a novel null contraction singularity forms at the Cauchy horizon, across which the metric is not continuously extendible in the usual sense. Heuristic arguments in the physics literature indicate that the oscillation condition should be satisfied generically on the event horizon. If these heuristics are true, then our result falsifies the $C^0$-formulation of Strong Cosmic Censorship by means of oscillations.
title Strong Cosmic Censorship in the presence of matter: the decisive effect of horizon oscillations on the black hole interior geometry
topic General Relativity and Quantum Cosmology
Mathematical Physics
Analysis of PDEs
Differential Geometry
url https://arxiv.org/abs/2105.04604