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Related papers: On the Letelier spacetime with quintessence: solut…

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This study investigates a Schwarzschild-anti de Sitter black hole coupled to a cloud of strings featuring only the electric-like component of the string bivector, embedded in a perfect fluid dark matter and a quintessence field. We examine…

General Relativity and Quantum Cosmology · Physics 2025-10-28 Faizuddin Ahmed , Edilberto O. Silva

We investigate a static, spherically symmetric black hole solution surrounded by a cloud of strings and immersed in an electromagnetic universe. By deriving the event horizon from the lapse function, we demonstrate that both the string…

General Relativity and Quantum Cosmology · Physics 2025-12-04 Ahmad Al-Badawi , Faizuddin Ahmed , İzzet Sakallı

In this paper, we study the polymer black hole solution surrounded by a quintessence field. The influence of quintessence on the polymer black hole is investigated through its thermodynamic properties, such as the Hawking temperature,…

General Relativity and Quantum Cosmology · Physics 2025-07-11 M. C. Araújo , J. G. Lima , C. R. Muniz , J. Furtado

We present new static spherically-symmetric exact solutions of Einstein equations with the quintessential matter surrounding a black hole charged or not as well as for the case without the black hole. A condition of additivity and linearity…

General Relativity and Quantum Cosmology · Physics 2010-11-19 V. V. Kiselev

We present a solution of Einstein equations with quintessential matter surrounding a $d$-dimensional black hole, whose asymptotic structures are determined by the state of the quintessential matter. We examine the thermodynamics of this…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Songbai Chen , Bin Wang , Rukeng Su

In this paper, we present exact spherically symmetric Gauss-Bonnet black hole solutions surrounded by a cloud of strings fluid with cosmological constant in $D>4$ dimensions. Both charged and uncharged cases are considered. We focus on the…

General Relativity and Quantum Cosmology · Physics 2023-12-27 Wenxi Zhai , Xiangdong Zhang

We present an investigation of a static, spherically symmetric Letelier black hole (BH) immersed in an electromagnetic universe (EMU), characterized by the cloud of strings (CoS) parameter $\alpha$ and the EMU parameter $a$. The photon…

General Relativity and Quantum Cosmology · Physics 2025-12-23 İzzet Sakallı , Erdem Sucu , Ahmad Al-Badawi , Faizuddin Ahmed

Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, we investigate the simultaneous effects of these dark sectors on the Euler-Heisenberg black hole, using the…

General Relativity and Quantum Cosmology · Physics 2025-04-01 B. Hamil , B. C. Lütfüoğlu

In this work, we investigate the thermodynamic properties and quasinormal modes of a regular Dymnikova-Letelier black hole. Starting from the Einstein field equations sourced by an effective anisotropic fluid, we analyze the resulting…

General Relativity and Quantum Cosmology · Physics 2026-05-27 L. C. N. Santos , L. G. Barbosa

We find an exact black hole solution with a minimally coupled scalar field. The corresponding spacetime has two horizons and one of the them is the black hole event horizon and the other is the cosmic horizon. In this sense, the solution is…

General Relativity and Quantum Cosmology · Physics 2020-10-13 Shuang Yu , Changjun Gao

The Dymnikova black hole represents a regular spacetime solution interpolating between a de Sitter core and an asymptotically Schwarzschild geometry. In this work, we investigate a generalized Dymnikova black hole surrounded by perfect…

General Relativity and Quantum Cosmology · Physics 2026-02-27 Faizuddin Ahmed , Sardor Murodov , Bekzod Rahmatov , Abdelmalek Bouzenada

In this work, we present the thermodynamic study of a model that considers the black hole as a condensate of gravitons. In this model, the spacetime is not asymptotically flat because of a topological defect that introduces an angle deficit…

General Relativity and Quantum Cosmology · Physics 2021-10-08 Jorge Alfaro , Robinson Mancilla

We construct a static, spherically symmetric black hole (BH) solution embedded in a cored Plummer dark matter (DM) halo and a Letelier cloud of strings (CoS). Starting from the Plummer-Schwarzschild metric of Senjaya et…

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

We derive the solution for a spherically symmetric string cloud configuration in a d-dimensional spacetime in the framework of f(R) theories of gravity. We also analyze some thermodynamic properties of the joint black hole - cloud of…

General Relativity and Quantum Cosmology · Physics 2018-06-12 J. P. Morais Graça , Iarley P. Lobo , I. G. Salako

The black string solution is a model of black holes in (3+1) dimensions that can be related to the BTZ (2+1) dimensions black hole solution. This object can be seen as a cylindrical black hole. In this work it is considered the black string…

High Energy Physics - Theory · Physics 2021-06-07 João Chakrian , Antônio de Pádua Santos

This SpringerBrief is based on a masters course on black hole thermodynamics and the black hole information problem taught by Dieter L\"ust during the summer term 2017 at the Ludwig-Maximilians-Universit\"at in Munich; it was written by…

General Relativity and Quantum Cosmology · Physics 2018-11-27 Dieter Lust , Ward Vleeshouwers

Black holes have been a subject of investigation over years not only because they have interesting physical properties, but also because they seem to be the appropriate tool for studying gravity in quantum scale. Although a lot of effort…

General Relativity and Quantum Cosmology · Physics 2020-12-09 Joao Chakrian , Antonio de Padua Santos

In this work, we re-assess a class of black hole solutions in a global monopole spacetime in the framework of an $f(R)$-gravity model. Our main line of investigation consists in considering a region close enough to the black hole, but such…

In this study we obtain the solution of the spherically symmetric de Sitter solution of black holes using a general form of distribution functions which include Gaussian, Rayleigh, and Maxwell-Boltzmann distribution as a special case. We…

General Relativity and Quantum Cosmology · Physics 2020-08-17 M F Mourad , N H Hussein , D A Eisad , T A S Ibrahima

We consider the Hamiltonian dynamics and thermodynamics of spherically symmetric spacetimes within a one-parameter family of five-dimensional Lovelock theories. We adopt boundary conditions that make every classical solution part of a black…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Jorma Louko , Jonathan Z. Simon , Stephen N. Winters-Hilt
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