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Considering the negative cosmological constant of an anti-de Sitter (AdS) background as a positive thermodynamic pressure in the extended phase space, we study the thermodynamic behaviors of the regular Hayward-AdS (HAdS) black hole (BH) by…

High Energy Physics - Theory · Physics 2022-05-17 Sen Guo , Ya-Ling Huang , En-Wei Liang

The discovery of gravitational waves and advances in black hole imaging have opened new opportunities to probe exotic physics in strong-field regimes. Building upon a recent black hole solution in Einstein gravity coupled with nonlinear…

High Energy Physics - Theory · Physics 2025-10-27 Faizuddin Ahmed , Ahmad Al-Badawi , İzzet Sakallı , Sara Kanzi

We present a comprehensive theoretical investigation of a novel black hole (BH) spacetime: a Schwarzschild BH embedded in a Hernquist-type dark matter halo (HDMH) and surrounded by a cloud of cosmic strings (CSs) -- collectively termed the…

General Relativity and Quantum Cosmology · Physics 2025-06-24 Faizuddin Ahmed , Ahmad Al-Badawi , İzzet Sakallı

We study the hololgraphic dual of the extended thermodynamics of spherically symmetric, charged AdS black holes in the context of the AdS/CFT correspondence. The gravitational thermodynamics of AdS black holes can be extended by allowing…

High Energy Physics - Theory · Physics 2022-09-07 Wan Cong , David Kubiznak , Robert Mann , Manus Visser

We revisit static, spherically symmetric solutions to AdS-Einstein gravity with a conformally coupled scalar field (and no self-interaction potential) in four dimensions. We first observe that a convenient choice of coordinates leads to a…

General Relativity and Quantum Cosmology · Physics 2024-09-10 Marcello Ortaggio

We probe the AdS/CFT correspondence by comparing the thermodynamics of a rotating black hole in five-dimensional anti-de Sitter space with that of a conformal field theory on $S^3$, whose parameters come from the boundary of spacetime. In…

High Energy Physics - Theory · Physics 2010-11-19 D. S. Berman , Maulik K. Parikh

The thermodynamics of d5 AdS BHs with positive, negative or zero curvature spatial section in higher derivative (HD) gravity is described. HD contribution to free energy may change its sign which leads to more complicated regime for…

High Energy Physics - Theory · Physics 2009-09-17 Shin'ichi Nojiri , Sergei D. Odintsov

In this work we study the Thermodynamics of D-dimensional Schwarzschild-anti de Sitter (SAdS) black holes. The minimal Thermodynamics of the SAdS spacetime is briefly discussed, highlighting some of its strong points and shortcomings. The…

High Energy Physics - Theory · Physics 2017-05-19 M. C. Baldiotti , R. Fresneda , C. Molina

The microscopic origin of black hole entropy remains one of the more intriguing open questions in theoretical physics. A subplot in this drama is the renowned Cardy-Verlinde formula, which uses two-dimensional conformal formalism to explain…

High Energy Physics - Theory · Physics 2007-05-23 A. J. M. Medved

We investigate the tendency in variations of the dual CFT$_2$ when a rotating AdS$_3$ black hole changes by fluxes transferred by the scattering of a massive scalar field according to the AdS/CFT correspondence. The conserved quantities of…

General Relativity and Quantum Cosmology · Physics 2020-12-01 Bogeun Gwak

We present a new exact solution to the gravitational field equations, where nonlinear electrodynamics (NLED) serves as the matter source in the presence of a quintessence field (QF). This solution describes a static, spherically symmetric…

General Relativity and Quantum Cosmology · Physics 2025-03-04 Ahmad Al-Badawi , Faizuddin Ahmed

In this paper, we attempt to further study the heat engine efficiency for the regular black hole (BH) with an anti-de Sitter (AdS) background where the working material is the Hayward-AdS (HAdS) BH. In the extended phase space, we…

General Relativity and Quantum Cosmology · Physics 2021-05-10 Sen Guo , Ya-Ling Huang , Ke-Jian He , Guo-Ping Li

We study the `string star' saddle, also known as the Horowitz-Polchinski solution, in the middle of d+1 dimensional thermal AdS space. We show that there's a regime of temperatures in which the saddle is very similar to the flat space…

High Energy Physics - Theory · Physics 2022-04-27 Erez Y. Urbach

We construct the charged Hayward-anti-de Sitter (AdS) black hole (BH) with a cloud of strings (CS) and perfect fluid dark matter (PFDM), and analyze its extended thermodynamic phase structure. The Hayward parameter $g$ replaces the central…

General Relativity and Quantum Cosmology · Physics 2026-03-04 Ahmad Al-Badawi , Faizuddin Ahmed , İzzet Sakallı

Motivated by the recent progress on the holographic dual of the extended thermodynamics for black holes in anti-de-Sitter (AdS) space, we investiggate the hologrphic thermodynamics for the five-dimensional neutral Gauss-Bonnet AdS black…

High Energy Physics - Theory · Physics 2025-04-23 Si-Jiang Yang , Md Sabir Ali , Shao-Wen Wei , Yu-Xiao Liu

We show that to investigate the thermodynamic properties of charged phantom spherically symmetric anti-de-Sitter black holes, it is necessary to consider the cosmological constant as a thermodynamic variable so that the corresponding…

General Relativity and Quantum Cosmology · Physics 2016-03-23 H. Quevedo , M. N. Quevedo , A. Sanchez

The Regular Phantom Black Holes (RPBH)s are of theoretical and observational importance, and some properties have been studied. In this work, we study some of the thermodynamical properties such as entropy, and temperature, ... in three…

General Relativity and Quantum Cosmology · Physics 2023-09-06 Maryam Haditale , Behrooz Malekolkalami

In the present work we study the geodesic motion and accretion process of a test particle near an Anti-de Sitter (ADS) BH surrounded by a dark fluid with a Chaplygin-like equation. Within the defined paradigm, we investigate on the…

General Relativity and Quantum Cosmology · Physics 2023-11-27 G. Mustafa , S. K. Maurya , A. Ditta , Saibal Ray , Farruh Atamurotov

In this study, we advance the understanding of thermodynamic properties and phase transitions in rotating anti-de Sitter (AdS) black holes by applying the Kaniadakis(KD) entropy framework. This framework represents a non-extensive…

General Relativity and Quantum Cosmology · Physics 2025-03-13 Bidyut Hazarika , Amijit Bhattacharjee , Prabwal Phukon

We study the equations of black strings in spacetimes of arbitrary dimensions with a negative cosmological constant and construct numerically non uniform black strings solutions. Our results suggest the existence of a localised black hole…

High Energy Physics - Theory · Physics 2009-07-22 T. Delsate