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We investigate the scattering of a spinning test particle by a Kerr black hole within the Mathisson-Papapetrou-Dixon model to linear order in spin. The particle's spin and orbital angular momentum are taken to be aligned with the black…

广义相对论与量子宇宙学 · 物理学 2018-08-29 Donato Bini , Andrea Geralico , Justin Vines

We extend Hintz's cosmological black hole gluing result to the Einstein-Maxwell system with positive cosmological constant by gluing multiple Reissner-Nordstr\"om or Kerr--Newman--de Sitter black holes into neighbourhoods of points in the…

广义相对论与量子宇宙学 · 物理学 2025-04-15 Markus Verlemann

In a previous paper it was shown that the quantum consistency conditions for the dilaton-gravity theory of Callan et al., imply that the cosmological constant term undergoes a dilaton dependent renormalization, in such a manner that the…

高能物理 - 理论 · 物理学 2009-10-22 S. P. de Alwis

It has been argued that generic classical perturbations to asymptotically de-Sitter Reissner-Nordtsr\"om (RN-dS) black holes may violate strong cosmic censorship conjecture. In this paper, we analyze whether quantum corrections can restore…

高能物理 - 理论 · 物理学 2020-09-08 Pushkal Shrivastava

We present an exhaustive analysis of scalar, electromagnetic and gravitational perturbations in the background of Schwarzchild-de Sitter and Reissner-Nordstrom-de Sitter spacetimes. The field propagation is considered by means of a…

广义相对论与量子宇宙学 · 物理学 2009-11-10 C. Molina , D. Giugno , E. Abdalla , A. Saa

We study {\it analytically} the asymptotic quasinormal spectrum of fermionic fields in the Kerr spacetime. We find an analytic expression for these black-hole resonances in terms of the black-hole physical parameters: its Bekenstein-Hawking…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Shahar Hod

Rotating black hole solutions in theories of modified gravity are important as they offer an arena to test these theories through astrophysical observation. The non-rotating black hole can be hardly tested since the black hole spin is very…

广义相对论与量子宇宙学 · 物理学 2018-09-28 Rahul Kumar , Sushant G. Ghosh

We present, in closed analytic form, a general stationary, slowly rotating black hole, which is solution to a large class of alternative theories of gravity in four dimensions. In these theories, the Einstein-Hilbert action is supplemented…

广义相对论与量子宇宙学 · 物理学 2011-10-27 Paolo Pani , Caio F. B. Macedo , Luis C. B. Crispino , Vitor Cardoso

We propose a quantum model of spinning black holes with the integrable ring singularities. For the charged Kerr-Newman quantum metric, the complete regularization takes place at fixing of the maximal (cut-off) energy of gravitons,…

广义相对论与量子宇宙学 · 物理学 2024-02-26 V. P. Neznamov , S. Yu. Sedov , V. E. Shemarulin

In the context of effective field theory, we consider quantum gravity with minimally coupled massless particles. Fixing the background geometry to be of the Kerr-Schild type, we fully determine the one-loop effective action of the theory…

高能物理 - 理论 · 物理学 2015-12-01 Basem Kamal El-Menoufi

We present an exhaustive analysis of scalar, electromagnetic and gravitational perturbations in the background of a Schwarzchild-de Sitter spacetime. The field propagation is considered by means of a semi-analytical (WKB) approach and two…

广义相对论与量子宇宙学 · 物理学 2007-05-23 C. Molina , E. Abdalla , A. Saa

We investigated Dirac Particles' Hawking radiation from event horizon of Kerr black hole in terms of the tunneling formalism. Applying WKB approximation to the general covariant Dirac equation in Kerr spacetime background, we obtain the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Ran Li , Ji-Rong Ren , Shao-Wen Wei

We study the corrections to the entropy of Einstein-Maxwell dilaton-axion black holes beyond semiclassical approximations. We consider the entropy of the black hole as a state variable and derive these corrections using the exactness…

广义相对论与量子宇宙学 · 物理学 2011-03-25 M. Akbar , K. Saifullah

We calculate the total flux of Hawking radiation from Kerr-(anti)de Sitter black holes by using gravitational anomaly method developed in gr-qc/0502074. We consider the general Kerr-(anti)de Sitter black holes in arbitrary $D$ dimensions…

高能物理 - 理论 · 物理学 2008-11-26 Zhibo Xu , Bin Chen

Regular rotating black holes are usually described by a metric of the Kerr-Schild form with a particular mass function that is chosen to avoid the ring singularity of the Kerr metric and which approaches the Kerr metric at the asymptotic…

广义相对论与量子宇宙学 · 物理学 2025-04-01 Marcos L. W. Basso , Vilson T. Zanchin

Doubly special relativity (DSR) is an effective model for encoding quantum gravity in flat spacetime. As a result of the nonlinearity of the Lorentz transformation, the energy-momentum dispersion relation is modified. One simple way to…

广义相对论与量子宇宙学 · 物理学 2015-12-02 Benrong Mu , Peng Wang , Haitang Yang

Planck-scale corrections to the black-hole radiation spectrum in the Parikh-Wilczek tunneling framework are calculated. The corrective terms arise from modifications in the expression of the surface gravity in terms of the mass-energy of…

高能物理 - 理论 · 物理学 2009-11-11 Michele Arzano , A. J. M. Medved , Elias C. Vagenas

We study black hole radiation of a Reissner-Nordstrom black hole with an electric charge in the framework of quantum gravity. Based on a canonical quantization for a spherically symmetric geometry, under physically plausible assumptions, we…

高能物理 - 理论 · 物理学 2015-03-19 Ichiro Oda

In this paper, we investigate the quantum gravity effects on the tunneling of particles and gravity's rainbow across the event horizon of Kerr-Newman black hole (KNBH) surrounded by the quintessence. The aspect of quantum gravity has been…

广义相对论与量子宇宙学 · 物理学 2026-03-16 Aheibam Boycha Meitei , Irom Ablu Meitei , Telem Ibungochouba Singh , Kangujam Yugindro Singh

We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the…

广义相对论与量子宇宙学 · 物理学 2020-05-28 Peter Hintz