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In this paper, the overcharging problem and thermodynamics in the extended phase spaces of the five-dimensional spherically symmetric topological black holes are investigated by absorptions of scalar particles and fermions. The cosmological…

General Relativity and Quantum Cosmology · Physics 2020-07-15 Deyou Chen , Shan Zeng

We consider the possibility that the weak cosmic censorship conjecture can be violated using the Oppenheimer-Snyder collapse model with a perfect fluid star interior. Metric models with a naked singularity can be used, and the…

General Relativity and Quantum Cosmology · Physics 2025-05-28 Il Gyeong Choi , Dong-han Yeom

It was recently shown that Strong Cosmic Censorship may be violated in highly charged black-hole spacetimes living in a universe with a positive cosmological constant. Several follow-up works have since suggested that such result, while…

General Relativity and Quantum Cosmology · Physics 2018-11-14 Vitor Cardoso , Joao L. Costa , Kyriakos Destounis , Peter Hintz , Aron Jansen

Tests of the weak cosmic censorship conjecture examine the possibility of the breakdown of predictivity of the gravitational theory considered, by checking if curvature singularities typically present in black hole spacetimes are concealed…

High Energy Physics - Theory · Physics 2024-05-09 Antonia M. Frassino , Jorge V. Rocha , Andrea P. Sanna

Israel's proof of the third law of black hole dynamics is based on the semi-rigidity assumption which requires that the areas of the outermost trapped surfaces are preserved. We argue that the condition that the area of the event horizon…

General Relativity and Quantum Cosmology · Physics 2018-05-22 Koray Düztaş

Recently, it was argued in [Phys. Rev. Lett. {\bf126}, 031102 (2021)] that the WCCC can serve as a constraint to high-order effective field theories. However, we find there exists a key error in their approximate black hole solution. After…

General Relativity and Quantum Cosmology · Physics 2021-10-18 Jie Jiang , Aofei Sang , Ming Zhang

In this paper, based on the new version of the gedanken experiments proposed by Sorce and Wald, we examine the weak cosmic censorship in the perturbation process of accreting matter fields for the charged dilaton-Lifshitz black holes. In…

General Relativity and Quantum Cosmology · Physics 2020-09-09 Jie Jiang , Ming Zhang

Presently, the inclusion of the vacuum energy in the energy momentum tensor, and the inclusion of the extra dimensions in the spacetime, can not be rule out of the research in gravitation. In this work we study the influence of the vacuum…

General Relativity and Quantum Cosmology · Physics 2015-10-28 M. Campos

The (zeroth-order) energy of a particle in the background of a black hole is given by Carter's integrals. However, exact calculations of a particle's {\it self-energy} (first-order corrections) are still beyond our present reach in many…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Shahar Hod

The Weak Cosmic Censorship (WCC) conjecture can be used as a consistency criterion for any viable modification over general relativity (GR). We employ this idea to show that in contrast to the black holes in GR, it is indeed possible to…

General Relativity and Quantum Cosmology · Physics 2021-12-01 Rajes Ghosh , Akash K Mishra , Sudipta Sarkar

Recent researches of the novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity have attracted great attention. In this paper, we investigate the validity of the weak cosmic censorship conjecture for a novel $4D$ charged EGB black hole with test…

General Relativity and Quantum Cosmology · Physics 2020-12-04 Si-Jiang Yang , Jun-Jie Wan , Jing Chen , Jie Yang , Yong-Qiang Wang

By calculating the change of entropy, we prove that the first law of black hole thermodynamics leads to the tunneling probability of massive particles through the horizon, including the tunneling probability of massive charged particles…

High Energy Physics - Theory · Physics 2014-11-20 Baocheng Zhang , Qing-yu Cai , Ming-sheng Zhan

We investigate the thermodynamical properties of charged torus-like black holes and take it as the working substance to study the heat engines. In the extended phase space, by interpreting the cosmological constant as the thermodynamic…

General Relativity and Quantum Cosmology · Physics 2021-02-10 Hanwen Feng , Yuchen Huang , Wei Hong , Jun Tao

In this paper, we investigate the validity of the weak cosmic censorship conjecture(WCCC) for a rotating linear dilaton black hole from two different methods. By using the classsical ingoing test particle method, we obtain the same results…

General Relativity and Quantum Cosmology · Physics 2021-04-22 Fei Qu , Si-Jiang Yang , Zhi Wang , Ji-Rong Ren

Motivated by the recent researches of black holes with NUT charge, we investigate the validity of the weak cosmic censorship conjecture for Kerr-Taub-NUT black hole with a test massive scalar field and a test particle, respectively. For the…

General Relativity and Quantum Cosmology · Physics 2020-04-01 Si-Jiang Yang , Jing Chen , Jun-Jie Wan , Shao-Wen Wei , Yu-Xiao Liu

We study cosmic censorship in the Reissner-Nordstrom charged black hole by means of quantum gravity holding near the apparent horizons. We consider a gedanken experiment whether or not a black hole with the electric charge $Q$ less than the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Ichiro Oda

We test the validity of cosmic censorship in the rotating anti-de Sitter black hole. For this purpose, we investigate whether the extremal black hole can be overspun by the particle absorption. The particle absorption will change the mass…

General Relativity and Quantum Cosmology · Physics 2016-02-11 Bogeun Gwak , Bum-Hoon Lee

The strong cosmic censorship hypothesis has recently regained a lot of attention in charged and rotating black holes immersed in de Sitter space. Although the picture seems to be clearly leaning towards the validity of the hypothesis in…

General Relativity and Quantum Cosmology · Physics 2019-11-04 Kyriakos Destounis , Rodrigo D. B. Fontana , Filipe C. Mena , Eleftherios Papantonopoulos

We study evolution and thermodynamics of a slow-roll transition between early and late time de Sitter phases, both in the homogeneous case and in the presence of a black hole, in a scalar field model with a generic potential having both a…

High Energy Physics - Theory · Physics 2017-11-22 Ruth Gregory , David Kastor , Jennie Traschen

It is well known that ($2+1$) dimensional charged BTZ (Banados, Teitelboim, Zanelli) black hole can be overcharged by a charged scalar field and a charged particle in contrast to their analogues in ($3+1$) and higher dimensions. In this…

General Relativity and Quantum Cosmology · Physics 2022-07-06 Ayyesha K. Ahmed , Sanjar Shaymatov , Bobomurat Ahmedov
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