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We study the entropy of static, spherically symmetric black holes in diffeomorphism-invariant theories with nonminimal matter--curvature couplings, using the covariant phase space formalism. For regular bifurcate Killing horizons, the…

广义相对论与量子宇宙学 · 物理学 2026-05-22 Jia-Zhou Liu , Shan-Ping Wu , Shao-Wen Wei , Yu-Xiao Liu

The entropy of a Schwarzschild black hole, as computed via the semiclassical Euclidean path integral in a stationary phase approximation, is determined not by the on-shell value of the action (which vanishes), but by the…

广义相对论与量子宇宙学 · 物理学 2023-12-19 Jens Boos

In this paper, We conducted an in-depth investigation into the thermodynamic topology of Einstein-Gauss-Bonnet black holes within the framework of Conformal Field Theory (CFT), considering the implications of non-extensive entropy…

广义相对论与量子宇宙学 · 物理学 2025-04-30 Mohammad Ali S. Afshar , Mohammad Reza Alipour , Saeed Noori Gashti , Jafar Sadeghi

Based on the generalized uncertainty principle, we study the entropy of a four-dimensional black hole by counting degrees of freedom near the horizon and obtain the (finite) entropy proportional to the surface area at the horizon without a…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Myungseok Yoon , Jihye Ha , Wontae Kim

We discuss the limitations on space time measurement in the Schwarzchild metric. We find that near the horizon the limitations on space time measurement are of the order of the black hole radius. We suggest that it indicates that a large…

高能物理 - 理论 · 物理学 2016-08-24 N. Itzhaki

Quantum black holes within the loop quantum gravity (LQG) framework are considered. The number of microscopic states that are consistent with a black hole of a given horizon area $A_0$ are counted and the statistical entropy, as a function…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Alejandro Corichi , Jacobo Diaz-Polo , Enrique Fernandez-Borja

In this work, we examine the entropy emission property of black holes. When the greybody factor is considered, it is found that Schwarzschild black hole is a one-dimensional entropy emitter, which is independent of the spacetime dimension…

广义相对论与量子宇宙学 · 物理学 2017-04-28 Shao-Wen Wei , Yu-Xiao Liu

{In (Sci. Rep. \textbf{12}, 8516 (2022)), Campos et al studied} the quasinormal modes and shadows of noncommutative Schwarzschild black holes. Since we know that the quintessence matter surrounding black holes has { significant effects} on…

广义相对论与量子宇宙学 · 物理学 2024-04-11 B. Hamil , B. C. Lütfüoğlu

Considering corrections to all orders in the Planck length on the quantum state density from a generalized uncertainty principle (GUP), we calculate the statistical entropy of the scalar field on the background of the Schwarzschild black…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Yong-Wan Kim , Young-Jai Park

Interior volume within the horizon of a black hole is a non-trivial concept which turns out to be very important to explain several issues in the context of quantum nature of black hole. Here we show that the entropy, contained by the {\it…

广义相对论与量子宇宙学 · 物理学 2017-05-31 Bibhas Ranjan Majhi , Saurav Samanta

This work presents a comparative analysis of the quasi-normal modes and ringdowns of scalar field perturbations in the non-commutative Schwarzschild black hole spacetime, focusing on two distinct non-minimal curvature couplings: in the…

广义相对论与量子宇宙学 · 物理学 2026-05-29 Majid Karimabadi , Davood Mahdavian Yekta , S. A. Alavi

We investigate the thermodynamics of a Schwarzschild black hole, surrounded by the quintessence energy-matter in the linear and quadratic generalized uncertainty principle framework. Considering the variance in the position to be of the…

广义相对论与量子宇宙学 · 物理学 2025-02-04 Soham Sen , Abhijit Dutta , Sunandan Gangopadhyay

Starting from metric of the general nonextreme stationary axisymmetric black hole in four-dimensional spacetime, both statistical-mechanical and thermodynamical entropies are studied. First, by means of the "brick wall" model in which the…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Jiliang Jing , Mu-Lin Yan

The Bekenstein bound, inspired by the physics of black holes, is introduced to constrain the entropy growth of a physical system down to the quantum level in the context of a generalized second law of thermodynamics. We first show that the…

高能物理 - 理论 · 物理学 2024-12-11 Mehdi Shokri

In this paper, we investigated the thermodynamic properties of Schwarzschild black hole (SBH) in the non-commutative (NC) gauge theory of gravity. According to our previous work, we modify the first law of the black hole (BH) thermodynamics…

广义相对论与量子宇宙学 · 物理学 2023-10-06 Abdellah Touati , Slimane Zaim

The entropy-to-energy bound is examined for a quantum scalar field confined to a cavity and satisfying Robin condition on the boundary of the cavity. It is found that near certain points in the space of the parameter defining the boundary…

广义相对论与量子宇宙学 · 物理学 2009-10-31 Sergey N. Solodukhin

We obtain the enropy of Schwarzschild and charged black holes in D>4 from superconformal gases that live on p=10-D dimensional brane-antibrane systems wrapped on T^p. The preperties of the strongly coupled superconformal theories such as…

高能物理 - 理论 · 物理学 2010-02-03 Edi Halyo

In this paper, we consider the holograph principle emergent from noncommutative geometry, based on the spectral action principle. We show that under some appropriate conditions, the gravity theory on a manifold with boundary could be…

广义相对论与量子宇宙学 · 物理学 2010-07-20 Jingbo Wang

We examine the conjecture for the complete monotonicity of certain curvature invariants for quantum black holes. In this note, we study a class of quantum regular black holes that are static, spherically symmetric, and characterized only by…

高能物理 - 理论 · 物理学 2025-09-30 A. Almasi , A. Moradpouri , M. Shahbazi

We consider the entropy of four-dimensional near-extremal N=2 black holes. Without R^2-terms, the Bekenstein-Hawking entropy formula has the structure of the extremal black holes entropy with a shift of the charges depending on the…

高能物理 - 理论 · 物理学 2011-06-08 Eyal Gruss , Yaron Oz