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Quantum-corrected rotating black holes and naked singularities in (2+1) dimensions

AuthorsCasals, M.; Fabbri, Alessandro ; Martínez, C.; Zanelli, J.
Issue DateMay-2019
PublisherAmerican Physical Society
CitationPhysical Review D 99 10: 104023 (2019)
AbstractWe analytically investigate the perturbative effects of a quantum conformally coupled scalar field on rotating (2+1)-dimensional black holes and naked singularities. In both cases we obtain the quantum-backreacted metric analytically. In the black hole case, we explore the quantum corrections on different regions of relevance for a rotating black hole geometry. We find that the quantum effects lead to a growth of both the event horizon and the ergosphere, as well as to a reduction of the angular velocity compared to their corresponding unperturbed values. Quantum corrections also give rise to the formation of a curvature singularity at the Cauchy horizon and show no evidence of the appearance of a superradiant instability. In the naked singularity case, quantum effects lead to the formation of a horizon that hides the conical defect, thus turning it into a black hole. The fact that these effects occur not only for static but also for spinning geometries makes a strong case for the role of quantum mechanics as a cosmic censor in Nature.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.99.104023
Identifiersdoi: 10.1103/PhysRevD.99.104023
issn: 2470-0029
Appears in Collections:(IFIC) Artículos
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