New gedanken experiment on higher-dimensional asymptotically AdS Reissner–Nordström black hole

Zhang, Ming; Jiang, Jie

doi:10.1140/epjc/s10052-020-08475-w

Cited by 18 publications

(9 citation statements)

References 33 publications

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“…Applying the transformation given in Eqs. (18), (19) and (20) to the electromagnetic potential (16) and the gravitational potential (17) of the KN metric, we can derive ω, Ãφ , Ãt (Please see App. A for the concrete expressions).…”

Section: Review Of Magnetized Kerr-newman Black Holesmentioning

confidence: 99%

“…In the new version of the gedanken experiment, the second-order perturbation just saves the WCCC. This approach has been applied to some other stationary black holes and the WCCC are always valid [13][14][15][16][17][18][19]. Recently, the WCCC and the second law of black hole thermodynamics have been discussed in the extended phase space [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Testing the weak cosmic censorship conjecture for extremal magnetized Kerr-Newman black holes

Gao¹,

Gao²

2022

Preprint

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We test the weak cosmic censorship conjecture for magnetized Kerr-Newman spacetime via the method of injecting a test particle. Hence, we need to know how the black hole's parameters change when a test particle enters the horizon. This was an unresolved issue for non-asymptotically flat spacetimes since there are ambiguities on the energies of black holes and particles. We find a novel approach to solve the problem. We start with the " physical process version" of the first law, which relates the particle's parameters with the change in the area of the black hole. By comparing this first law with the usual first law of black hole thermodynamics, we redefine the particle's energy such that the energy can match the mass parameter of the black hole. Then, we show that the horizon of the extremal magnetized Kerr-Newman black hole could be destroyed after a charged test particle falls in, which leads to a possible violation of the weak cosmic censorship conjecture. We also find that the allowed parameter range for this process is very small, which indicates that after the self-force and radiation effects are taken into account, the weak cosmic censorship conjecture could still be valid. In contrast to the case where the magnetic field is absent, the particle cannot be released at infinity to destroy the horizon. And in the case of a weak magnetic field, the releasing point becomes closer to the horizon as the magnetic field increases. This indicates that the magnetic field makes the violation of the cosmic censorship more difficult. Finally, by applying our new method to Kerr-Newman-dS (AdS) black holes, which are wellknown non-asymptotically flat spacetimes, we obtain the expression of the particle's energy which matches the black hole's mass parameter.

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Section: Review Of Magnetized Kerr-newman Black Holesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Testing the weak cosmic censorship conjecture for extremal magnetized Kerr-Newman black holes

Gao¹,

Gao²

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Based on Iyer-Wald formalism [25] and null energy condition, the second-order perturbation inequality is derived to show that WCCC is valid under the second-order approximation of the matter fields perturbation. After that, many works based on this new experiment [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] show that WCCC is applicable for other kinds of black holes. In addition, more study on the test for WCCC can be found in [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60].…”

Section: Introductionmentioning

confidence: 99%

New Gedanken experiment on RN-AdS black holes surrounded by quintessence

Tao

2022

Eur. Phys. J. C

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In this paper, we use the new version of Gedanken experiment to investigate the weak cosmic censorship conjecture(WCCC) for RN-AdS black holes surrounded by quintessence. The process of matter fields falling into the black hole can be regarded as a dynamic process. Since the perturbation of matter fields doesn’t affect the spacetime geometry, we propose the stability condition and assume the process of matter fields falling into the black hole satisfies the null energy condition. Based on the stability condition and the null energy condition, the first-order and second-order perturbation inequalities are derived. As a result, we show that the WCCC for RN-AdS black holes surrounded by quintessence cannot be violated under the second-order approximation of matter fields perturbation.

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“…Recently, by taking into account the second-order perturbations that comes from the matter fields, Sorce and Wald showed that the Kerr-Newman black hole cannot be destroyed [32]. Subsequent systematic works further support the result that the event horizon cannot be destroyed by this kind of gedanken experiment [33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Destroying the event horizon of a nonsingular rotating quantum-corrected black hole

Yang,

Zhang,

Wei

et al. 2022

Preprint

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The destruction of the event horizon of a nonsingular black hole, which is not prevented by the weak cosmic censorship conjecture, might provide us the possibility to access quantum regime of gravity inside black hole. We investigate the possibility of overspinning a nonsingular rotating quantum-corrected black hole by a test particle and a scalar field in this paper, and analyse the effect of the quantum parameter on the destruction of the event horizon. For the test particle injection, both extremal and near-extremal black holes cannot be overspun due to the existence of the quantum parameter. And the larger the quantum parameter the harder the black hole to be overspun. It seems that the quantum parameter acts as a protector to prevent the black hole to be destroyed. However, for the test scalar field scattering, both extremal and near-extremal black holes can be destroyed. Due to the loop quantum gravity correction, the angular velocity of the extremal black hole shifts from that of the extremal Kerr black hole. This provides a small range of wave modes to destroy the event horizon of the quantum-corrected black hole.

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New gedanken experiment on higher-dimensional asymptotically AdS Reissner–Nordström black hole

Cited by 18 publications

References 33 publications

Testing the weak cosmic censorship conjecture for extremal magnetized Kerr-Newman black holes

Testing the weak cosmic censorship conjecture for extremal magnetized Kerr-Newman black holes

New Gedanken experiment on RN-AdS black holes surrounded by quintessence

Destroying the event horizon of a nonsingular rotating quantum-corrected black hole

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