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200 papers

A comprehensive treatment of black hole thermodynamics in two-dimensional dilaton gravity is presented. We derive an improved action for these theories and construct the Euclidean path integral. An essentially unique boundary counterterm…

High Energy Physics - Theory · Physics 2010-10-27 Daniel Grumiller , Robert McNees

In three dimensions, we consider the Einstein-Maxwell Lagrangian dressed by a nonminimally coupled scalar field in New Massive Gravity. For this theory, we provide two families of electrically charged Lifshitz black holes where their metric…

High Energy Physics - Theory · Physics 2020-03-31 Moises Bravo-Gaete , María Montserrat Juárez-Aubry

As the interaction between the black holes and highly energetic infalling charged matter receives quantum corrections, the basic laws of black hole mechanics have to be carefully rederived. Using the covariant phase space formalism, we…

General Relativity and Quantum Cosmology · Physics 2021-06-29 Ana Bokulić , Tajron Jurić , Ivica Smolić

We study the entropy of extremal four dimensional black holes and five dimensional black holes and black rings is a unified framework using Sen's entropy function and dimensional reduction. The five dimensional black holes and black rings…

High Energy Physics - Theory · Physics 2008-11-26 Kevin Goldstein , Rudra P. Jena

We construct the first example of a superstratum: a class of smooth horizonless supergravity solutions that are parameterized by arbitrary continuous functions of (at least) two variables and have the same charges as the supersymmetric…

High Energy Physics - Theory · Physics 2015-05-28 Iosif Bena , Stefano Giusto , Rodolfo Russo , Masaki Shigemori , Nicholas P. Warner

Higher curvature gravity usually has complicated field equations, and solving them analytically is strenuous. In this work, we obtain an analytical charged black hole (BH) solution in higher curvature gravity using the thermodynamics of…

General Relativity and Quantum Cosmology · Physics 2025-05-26 Seyed Naseh Sajadi , Supakchai Ponglertsakul

We study the solutions of the Euclidean-signature Einstein equations (gravitational instantons) whose line-element takes the Kerr-bolt form, characterized by three real parameters: a size, a NUT charge, and a spin rate. The exclusion of…

High Energy Physics - Theory · Physics 2008-11-26 A. M. Ghezelbash , R. B. Mann , Rafael D. Sorkin

We introduce novel black hole (BH) solutions, charge/non-charge, within the framework of $f(R)$ gravity, a theory that does not inherently include a cosmological constant, using equal/diffirent metric ansatzs. Remarkably, these solutions…

General Relativity and Quantum Cosmology · Physics 2025-09-22 G. G. L. Nashed

We construct a class of charged rotating solutions in $(n+1)$-dimensional Maxwell-Brans-Dicke theory with flat horizon in the presence of a quadratic potential and investigate their properties. These solutions are neither asymptotically…

High Energy Physics - Theory · Physics 2008-11-26 M. H. Dehghani , J. Pakravan , S. H. Hendi

We investigate static and rotating charged spherically symmetric solutions in the framework of $f({\cal R})$ gravity, allowing additionally the electromagnetic sector to depart from linearity. Applying a convenient, dual description for the…

General Relativity and Quantum Cosmology · Physics 2021-01-04 G. G. L. Nashed , Emmanuel N. Saridakis

The stationary solutions of a large variety of (super)gravity theories can be described within a non-linear sigma model G / H* coupled to Euclidean gravity in three-dimensions, for which G is a simple group and H* a non-compact real form of…

High Energy Physics - Theory · Physics 2017-08-23 Guillaume Bossard

We solve the dilaton field equation in the background of a spherically symmetric black hole in type II superstring theory with $\alpha'^3$ corrections in arbitrary $d$ spacetime dimensions. We then apply this result to obtain a spherically…

High Energy Physics - Theory · Physics 2019-04-17 Filipe Moura

Thermodynamics of black holes offers a promising avenue for exploring the quantum nature of black holes and quantum gravity. In this Letter, we investigate the thermodynamic properties of dyonic black holes in the five-dimensional…

General Relativity and Quantum Cosmology · Physics 2024-10-02 Rong-Gen Cai , Li Li , Jun-Kun Zhao

Exact static spherically symmetric charged black holes in four dimensions are presented. One of them has only electric charge and another electric and magnetic charges. In these solutions the metric is asymptotically flat, has two horizons,…

General Relativity and Quantum Cosmology · Physics 2009-11-11 E. Kyriakopoulos

We present an asymptotically flat supersymmetric black lens solution with the horizon topology L(n,1)=S^3/Z_n in the five-dimensional minimal ungauged supergravity. We show that the black lens carries a mass, two independent angular…

High Energy Physics - Theory · Physics 2016-08-31 Shinya Tomizawa , Masato Nozawa

Angular tension is an ADM charge that contributes a work term to the first law of black hole mechanics when the range of an angular coordinate is varied and leads to a new Smarr formula for stationary black holes. A phase diagram for…

High Energy Physics - Theory · Physics 2013-05-30 David Kastor , Jennie Traschen

In this paper, we investigate the asymptotically Anti de Sitter solutions of rotating black strings coupled to Born-Infeld and Modified Maxwell non-linear electrodynamics in the context of Einsteinian, Einsteinian cubic and Einsteinian…

General Relativity and Quantum Cosmology · Physics 2023-12-22 Hamid R. Bakhtiarizadeh , Hanif Golchin

In the present paper we study the long-standing problem for the thermodynamics of magnetized dilaton black holes. For this purpose we construct an exact solution describing a rotating charged dilaton black hole immersed in an external…

General Relativity and Quantum Cosmology · Physics 2015-06-15 Stoytcho S. Yazadjiev

In this paper, we investigate the thermodynamics of the charged NUT black hole with the Misner strings present in the Einstein-Maxwell gravity. We show that the Misner charge $N$ can be obtained by performing Komar integration over the…

High Energy Physics - Theory · Physics 2019-11-13 Zhaohui Chen , Jie Jiang

A rotating hairy black hole solution is found in gravity minimally coupled to a self-interacting real scalar field in three spacetime dimensions. Then we discuss analytically the horizon structure and find an analogue of the famous Kerr…

General Relativity and Quantum Cosmology · Physics 2014-06-30 Wei Xu , Liu Zhao , De-Cheng Zou