Strong cosmic censorship for a scalar field in a Born-Infeld–de Sitter black hole

Gan, Qingyu; Guo, Guangzhou; Wang, Peng; Wu, Houwen

doi:10.1103/physrevd.100.124009

Cited by 30 publications

(20 citation statements)

References 75 publications

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“…In the context of Kerr geometry, there is a set of quasinormal modes precisely existing on the negative imaginary axis [87]. Interestingly, purely imaginary quasinormal modes were found to play an important role in violating the strong cosmic censorship conjecture for near-extremal dS black holes [88,90]. Similar to the cusp presented in Fig.…”

Section: Scalarized Black Holesmentioning

confidence: 73%

“…The purely imaginary quasinormal modes cor-respond to a special set of purely damped modes, which are distinguished from regular complex ones with non-vanishing real part. Although purely imaginary quasinormal modes have not often been reported in the literature, their existence was found for various black holes [85][86][87][88][89][90][91]. Specifically, it was demonstrated that the type of purely imaginary modes can be used to characterize electromagnetic and axial perturbations of large asymptotically AdS black holes [85].…”

Section: Scalarized Black Holesmentioning

confidence: 99%

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Scalarized Einstein–Maxwell-scalar black holes in anti-de Sitter spacetime

Guo

Wang

et al. 2021

Eur. Phys. J. C

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In this paper, we study spontaneous scalarization of asymptotically anti-de Sitter charged black holes in an Einstein–Maxwell-scalar model with a non-minimal coupling between the scalar and Maxwell fields. In this model, Reissner–Nordström-AdS (RNAdS) black holes are scalar-free black hole solutions, and may induce scalarized black holes due to the presence of a tachyonic instability of the scalar field near the event horizon. For RNAdS and scalarized black hole solutions, we investigate the domain of existence, perturbative stability against spherical perturbations and phase structure. In a micro-canonical ensemble, scalarized solutions are always thermodynamically preferred over RNAdS black holes. However, the system has much richer phase structure and phase transitions in a canonical ensemble. In particular, we report a RNAdS BH/scalarized BH/RNAdS BH reentrant phase transition, which is composed of a zeroth-order phase transition and a second-order one.

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Section: Scalarized Black Holesmentioning

confidence: 73%

Section: Scalarized Black Holesmentioning

confidence: 99%

Scalarized Einstein–Maxwell-scalar black holes in anti-de Sitter spacetime

Guo

Wang

et al. 2021

Eur. Phys. J. C

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“…In addition, the fate of SCC are studied in many contexts e.g. Kerr-Newman dS black hole [20], fermionic field [21,22], non-minimally coupled scalar field [23,24] and recently in Born-Infeld dS black hole [25].…”

Section: Introductionmentioning

confidence: 99%

Quasi-normal modes of near-extremal black holes in generalized spherically symmetric spacetime and strong cosmic censorship conjecture

2020

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A number of near-extremal conditions are utilized to simplify the equation of motion of the neutral scalar perturbations in generalized spherically symmetric black hole background into a differential equation with the Pöschl–Teller potential. An analytic formula for quasinormal frequencies is obtained. The analytic formula is then used to investigate strong cosmic censorship conjectures (SCC) of the generalized black hole spacetime for the smooth initial data. The Christodoulou version of the SCC is found to be violated for certain regions of the black hole parameter space including the black holes in general relativity while the $$C^{1}$$ C 1 version of the SCC is always valid.

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“…The central result arising out of these analyses is the realization that the strong cosmic censorship conjecture is violated in the near extremal regime for non-rotating black holes, while for rotating black holes, the violation can be avoided. For black holes in Born-Infeld-de Sitter and Horndeski theory, the strong cosmic censorship conjecture has also been recently studied in [24,25].…”

Section: Introductionmentioning

confidence: 99%

Strong cosmic censorship conjecture in higher curvature gravity

Mishra

Chakraborty

2020

Phys. Rev. D

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Deterministic nature of general relativity is ensured by the strong cosmic censorship conjecture, which asserts that spacetime cannot be extended beyond Cauchy horizon with square integrable connection. Although this conjecture holds true for asymptotically flat black hole spacetimes in general relativity, a potential violation of this conjecture occurs in charged asymptotically de Sitter spacetimes. Since it is expected that Einstein-Hilbert action will involve higher curvature corrections, in this article we have studied whether one can restore faith in the strong cosmic censorship when higher curvature corrections to general relativity are considered. Contrary to our expectations, we have explicitly demonstrated that not only a violation to the conjecture occurs near extremality, but the violation appears to become stronger as the strength of the higher curvature term increases. * akash.mishra@iitgn.ac.in

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Strong cosmic censorship for a scalar field in a Born-Infeld–de Sitter black hole

Cited by 30 publications

References 75 publications

Scalarized Einstein–Maxwell-scalar black holes in anti-de Sitter spacetime

Scalarized Einstein–Maxwell-scalar black holes in anti-de Sitter spacetime

Quasi-normal modes of near-extremal black holes in generalized spherically symmetric spacetime and strong cosmic censorship conjecture

Strong cosmic censorship conjecture in higher curvature gravity

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