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We consider a quantum field which is in a Hartle-Hawking state propagating in a spherically symmetric black hole space-time. We calculate the components of the stress tensor, renormalized using the Hadamard form of the Green's function, in…

广义相对论与量子宇宙学 · 物理学 2013-05-30 Cormac Breen , Adrian C. Ottewill

We examine the behavior of non-commutative Schwarzschild black holes in the context of massive gravity. According to the investigation, corresponding to a minimal mass, the black hole can have two horizons, one horizon, or no horizon at…

广义相对论与量子宇宙学 · 物理学 2024-04-17 Piyali Bhar , Dhruba Jyoti Gogoi , Supakchai Ponglertsakul

In this paper, we study rotating horizon less black shells as an alternative to Kerr black holes. We make use of Ernst's potential to solve the Einstein equations perturbatively in the angular momentum $a$. Calculating to order $a^6$, we…

广义相对论与量子宇宙学 · 物理学 2024-01-26 Ulf Danielsson , Suvendu Giri

In this contribution we present an overview of our work on the numerical simulation of the perturbation of a black hole space-time by incoming gravitational waves. The formulation we use is based on Friedrich's general conformal equations…

广义相对论与量子宇宙学 · 物理学 2025-03-25 Breanna Camden , Jörg Frauendiener , Joseph Galinski , Kaushal Pillay , Chris Stevens , Sebenele Thwala

Introducing a black hole (BH) effective temperature, which takes into account both the non-strictly thermal character of Hawking radiation and the countable behavior of emissions of subsequent Hawking quanta, we recently re-analysed BH…

广义相对论与量子宇宙学 · 物理学 2014-03-03 Christian Corda

Recently, a general analysis has been given of the stability with respect to axisymmetric perturbations of stationary-axisymmetric black holes and black branes in vacuum general relativity in arbitrary dimensions. It was shown that…

广义相对论与量子宇宙学 · 物理学 2015-09-15 Kartik Prabhu , Robert M. Wald

The last decade has seen considerable interest in the quasi-normal frequencies [QNFs] of black holes (and even wormholes), both asymptotically flat and with cosmological horizons. There is wide agreement that the QNFs are often of the form…

广义相对论与量子宇宙学 · 物理学 2010-09-02 Jozef Skakala , Matt Visser

Numerical results for the semi-classical stress-energy tensor outside the horizon of a Schwarzschild black hole obtained in the 1980's and 1990's are re- examined in order to better understand the origin of Hawking radiation and the…

广义相对论与量子宇宙学 · 物理学 2018-08-28 James M. Bardeen

This paper evaluates the potential for constraining the quantum scale parameter $\xi$ of regular black hole within the asymptotically safe gravity framework using gravitational waves from extreme mass ratio inspirals (EMRIs). Since $\xi$…

广义相对论与量子宇宙学 · 物理学 2025-10-06 Lai Zhao , Meirong Tang , Zhaoyi Xu

Black hole entropy is identified with the counting of the dynamical degrees of freedom of trapped gravitational modes continually sourced by the Hawking-Unruh process. In the context of linear perturbations of Schwarzschild spacetime the…

广义相对论与量子宇宙学 · 物理学 2026-01-14 Seth Major , Daniel Rodriguez , Thomas Takis

We point out how to construct the Hartle-Hawking-Israel state for the minimaly coupled massless quantum real scalar field in the two dimensional BTZ black hole. We also calculate the renormalized energy-momentum tensor for the same field in…

高能物理 - 理论 · 物理学 2014-11-25 Leonardo Ortíz

This is the first of two papers on computing the self-force in a radiation gauge for a particle moving in circular, equatorial orbit about a Kerr black hole. In the EMRI (extreme-mass-ratio inspiral) framework, with mode-sum…

广义相对论与量子宇宙学 · 物理学 2013-09-17 Abhay G. Shah , John L. Friedman , Tobias S. Keidl

We investigate the massless scalar field perturbations, including the quasinormal mode spectrum and the ringdown waveform, of a regular black hole spacetime that was derived via the Loop Quantum Gravity inspired polymer quantization of…

广义相对论与量子宇宙学 · 物理学 2020-11-25 Ramin G. Daghigh , Michael D. Green , Jodin C. Morey , Gabor Kunstatter

We discuss some general properties of black hole entropy in loop quantum gravity from the perspective of local stationary observers at distance l from the horizon. The present status of the theory indicates that black hole entropy differs…

广义相对论与量子宇宙学 · 物理学 2012-10-09 Amit Ghosh , Alejandro Perez

We study the stress energy two-point function to show how short distance correlations across the horizon transform into correlations among asymptotic states, for the Unruh effect, and for black hole radiation. In the first case the…

广义相对论与量子宇宙学 · 物理学 2014-11-20 Renaud Parentani

The quantum spin Hall (QSH) state is a topologically non-trivial state of quantum matter which preserves time-reversal symmetry; it has an energy gap in the bulk, but topologically robust gapless states at the edge. Recently, this novel…

介观与纳米尺度物理 · 物理学 2009-11-13 Chaoxing Liu , Taylor L. Hughes , Xiao-Liang Qi , Kang Wang , Shou-Cheng Zhang

We study the quasinormal modes (QNMs) of charged scalar in the static spherically symmetric black hole background near the event and cosmological horizon. Starting with numerical analysis of the QNMs of black hole in the dRGT massive…

高能物理 - 理论 · 物理学 2019-04-10 Takol Tangphati , Supakchai Ponglertsakul , Piyabut Burikham

In this paper we calculate modifications to the Schwarzschild solution by using a semiclassical analysis of loop quantum black hole. We obtain a metric inside the event horizon that coincides with the Schwarzschild solution near the horizon…

广义相对论与量子宇宙学 · 物理学 2009-07-24 Leonardo Modesto

Starting from an effective action for quantum gravity, we calculate the quantum gravitational corrections to the Wald entropy of a four dimensional non-extremal Reissner-Nordstr\"om (RN) black hole in the limit of small electric charge,…

高能物理 - 理论 · 物理学 2023-05-23 Ruben Campos Delgado

We study analytically the quasinormal mode spectrum of near-extremal (rotating) Kerr black holes. 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 2009-11-11 Shahar Hod , Uri Keshet