scholarly journals Strong cosmic censorship conjecture in higher curvature gravity

2020 ◽  
Vol 101 (6) ◽  
Author(s):  
Akash K. Mishra ◽  
Sumanta Chakraborty
Keyword(s):  
Cosmic Censorship ◽  
Strong Cosmic Censorship ◽  
Higher Curvature Gravity ◽  
Cosmic Censorship Conjecture

scholarly journals A proof of the strong cosmic censorship conjecture

2020 ◽  
Vol 29 (14) ◽  
pp. 2042003
Author(s):  
Shahar Hod
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Second Law Of Thermodynamics ◽  
Cosmic Censorship ◽  
Necessary Condition ◽  
Deterministic Theory ◽  
Black Hole Spacetimes ◽  
Generalized Second Law ◽  
Strong Cosmic Censorship ◽  
Cosmic Censorship Conjecture

The Penrose strong cosmic censorship conjecture asserts that Cauchy horizons inside dynamically formed black holes are unstable to remnant matter fields that fall into the black holes. The physical importance of this conjecture stems from the fact that it provides a necessary condition for general relativity to be a truly deterministic theory of gravity. Determining the fate of the Penrose conjecture in nonasymptotically flat black hole spacetimes has been the focus of intense research efforts in recent years. In this paper, we provide a remarkably compact proof, which is based on Bekenstein’s generalized second law of thermodynamics, for the validity of the intriguing Penrose conjecture in physically realistic (dynamically formed) curved black hole spacetimes.

scholarly journals Strong cosmic censorship under quasinormal modes of non-minimally coupled massive scalar field

2019 ◽  
Vol 79 (9) ◽  
Author(s):  
Bogeun Gwak
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Decay Rate ◽  
Small Mass ◽  
Cosmic Censorship ◽  
Massive Scalar ◽  
De Sitter ◽  
Massive Scalar Field ◽  
Strong Cosmic Censorship ◽  
Cosmic Censorship Conjecture

Abstract We investigate the strong cosmic censorship conjecture in lukewarm Reissner–Nordström–de Sitter black holes (and Martínez–Troncoso–Zanelli black holes) using the quasinormal resonance of non-minimally coupled massive scalar field. The strong cosmic censorship conjecture is closely related to the stability of the Cauchy horizon governed by the decay rate of the dominant quasinormal mode. Here, dominant modes are obtained in the limits of small and large mass black holes. Then, we connect the modes by using the WKB approximation. In our analysis, the strong cosmic censorship conjecture is valid except in the range of the small-mass limit, in which the dominant mode can be assumed to be that of the de Sitter spacetime. Particularly, the coupling constant and mass of the scalar field determine the decay rate in the small mass range. Therefore, the validity of the strong cosmic censorship conjecture depends on the characteristics of the scalar field.

scholarly journals Strong cosmic censorship conjecture with NUT charge and conformal coupling

2020 ◽  
Vol 37 (19) ◽  
pp. 195004
Author(s):  
Mostafizur Rahman ◽  
Soumodeep Mitra ◽  
Sumanta Chakraborty
Keyword(s):  
Cosmic Censorship ◽  
Strong Cosmic Censorship ◽  
Cosmic Censorship Conjecture

scholarly journals Fate of strong cosmic censorship conjecture in presence of higher spacetime dimensions

2019 ◽  
Vol 2019 (3) ◽  
Author(s):  
Mostafizur Rahman ◽  
Sumanta Chakraborty ◽  
Soumitra SenGupta ◽  
Anjan A. Sen
Keyword(s):  
Cosmic Censorship ◽  
Strong Cosmic Censorship ◽  
Cosmic Censorship Conjecture

scholarly journals Diving inside a hairy black hole

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Nicolás Grandi ◽  
Ignacio Salazar Landea
Keyword(s):  
Black Hole ◽  
Cosmic Censorship ◽  
Charged Black Hole ◽  
Cauchy Horizon ◽  
Strong Cosmic Censorship ◽  
Scalar Hair ◽  
Hairy Black Hole ◽  
Cosmic Censorship Conjecture

Abstract We investigate the interior of the Einstein-Gauss-Bonnet charged black-hole with scalar hair. We find a variety of dynamical epochs, with the particular important feature that the Cauchy horizon is not present. This makes the violation of the no-hair theorem a possible tool to understand how might the strong cosmic censorship conjecture work.

scholarly journals Addendum to “Strong cosmic censorship: The nonlinear story”

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Raimon Luna ◽  
Miguel Zilhão ◽  
Vitor Cardoso ◽  
João L. Costa ◽  
José Natário
Keyword(s):  
Cosmic Censorship ◽  
Strong Cosmic Censorship
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