Dyonic Kerr–Newman black holes, complex scalar field and cosmic censorship

Semiz, İbrahim

doi:10.1007/s10714-010-1108-z

Cited by 109 publications

(108 citation statements)

References 31 publications

(72 reference statements)

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“…Extending Wald's calculation further, an analogous result of overcharging a Kerr-Newman black hole in the presence of both electric and magnetic charged was studied in [8]. Overcharging via test field absorption instead of test particle was pursued in [9][10][11]. Various other attempts of overcharging have been carried out in last few decades over a wide range of black hole solutions in general relativity in order to look for any possible violation of cosmic censorship [12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Overcharging a multi-black-hole system and cosmic censorship

Mishra

Sarkar

2019

Phys. Rev. D

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We study the generalization of the gadenken experiment of overcharging an extremal black hole proposed by Wald in the context of a multi black hole solution. In particular, we attempt to overcharge a system of two extremal black holes via test particle absorption to produce a system involving a black hole and a naked singularity. If such a process is possible, then this would be a potential violation of the cosmic censorship hypothesis. However, we find that, analogous to Wald's result for a single charged black hole, such a test particle which can expose the singularity, would not be able to enter the horizon. This provides an interesting and non-trivial example that supports the validity of the cosmic censorship hypothesisin four dimensional general relativity. * akash.mishra@iitgn.ac.in † sudiptas@iitgn.ac.in

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Section: Introductionmentioning

confidence: 99%

Overcharging a multi-black-hole system and cosmic censorship

Mishra

Sarkar

2019

Phys. Rev. D

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“…Interestingly, the physics of general relativity prohibits such a process, the test particles with sufficient charge and angular momentum, which can overcharge the black hole get repelled and does not enter the event horizon. Similar analysis has been done on various scenarios, and it is always found that the formation of a naked singularity by overcharging is not possible [12][13][14][15][16][17][18][19][20][21]. On the other hand, Hubeny has shown that if the initial configuration is near extremal, it is possible to overcharge a Reissner-Nordstrom (RN) black hole using test particle absorption [22].…”

Section: Introductionmentioning

confidence: 67%

Overcharging higher curvature black holes

2019

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We examine the problem of overcharging extremal and near-extremal black hole solutions of Einstein-Gauss-Bonnet gravity in any dimension, generalizing the result in general relativity. We show that as in the case of general relativity, it is not possible to create a naked singularity by overcharging an extremal black hole in Einstein-Gauss-Bonnet gravity using a charged test particle. Our result suggests that the validity of the cosmic censorship hypothesis transcends beyond general relativity to well motivated higher curvature gravity.

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“…. (4) Note that the above black hole solutions hold for the dimensions which are multiples of four. Due to the restriction condition D = 4p, it is ensure that the traceless property of the energy-momentum tensor.…”

Section: A Brief Review On the Higher-dimensional F (R) Black Holesmentioning

confidence: 94%

Violations of the weak cosmic censorship conjecture in the higher dimensional f(R) black holes with pressure

2020

Eur. Phys. J. C

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We adopt the energy momentum relation of charged particles to study the thermodynamics laws and weak cosmic censorship conjecture of higher-dimensional f (R) AdS black holes in different phase spaces by considering charged particle absorption. In the normal phase space, it turns out that the laws of thermodynamic and the weak cosmic censorship conjecture are valid. In the extended phase space, though the firs law of thermodynamics is valid, the second law of thermodynamics is invalid. More interestingly, the weak cosmic censorship conjecture is shown to be violated since the parameter f (R 0 ) contributes to the final state. The magnitudes of the violations for both the second law and weak cosmic censorship conjecture are dependent on the parameters l, p, f (R 0 ).

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Dyonic Kerr–Newman black holes, complex scalar field and cosmic censorship

Cited by 109 publications

References 31 publications

Overcharging a multi-black-hole system and cosmic censorship

Overcharging a multi-black-hole system and cosmic censorship

Overcharging higher curvature black holes

Violations of the weak cosmic censorship conjecture in the higher dimensional f(R) black holes with pressure

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