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Related papers: Bardeen solution with a cloud of strings

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We derive an exact solution of the spherically symmetric Bardeen black hole surrounded by perfect fluid dark matter (PFDM). By treating the magnetic charge $g$ and dark matter parameter $\alpha$ as thermodynamic variables, we find that the…

General Relativity and Quantum Cosmology · Physics 2021-05-26 He-Xu Zhang , Yuan Chen , Tian-Chi Ma , Peng-Zhang He , Jian-Bo Deng

In the present paper we try to connect the Bardeen black hole with the concept of the recently proposed black hole chemistry. We study thermodynamic properties of the regular black hole with an anti-deSitter background. The negative…

General Relativity and Quantum Cosmology · Physics 2025-10-13 Athanasios G. Tzikas

The thermodynamics and overcharging problem in the RN-AdS black hole with the cloud of strings and quintessence are investigated by absorption of scalar particle and fermion in the extend phase space. The cosmological constant is treated as…

General Relativity and Quantum Cosmology · Physics 2020-08-24 Jing Liang , Benrong Mu , Jun Tao

We prove global existence of a solution to an initial and boundary value problem for a highly nonlinear PDE system. The problem arises from a thermomechanical dissipative model describing hydrogen storage by use of metal hydrides. In order…

Analysis of PDEs · Mathematics 2015-05-18 Elisabetta Chiodaroli

We consider the dynamics of confined strings embedded in a gapless four-dimensional theory. To this end, we examine finite-tension string-like solutions to the equations of motion of the $\mathbb{C}\mathbb{P}^1$ non-linear sigma model. We…

High Energy Physics - Theory · Physics 2026-02-23 Jeremias Aguilera Damia , Giovanni Galati , Giovanni Rizi

This thesis concerns the study of high-temperature string theory on curved backgrounds, generalizing the notions of Hagedorn temperature and thermal scalar to general backgrounds. Chapter 2 contains a review on string thermodynamics in flat…

High Energy Physics - Theory · Physics 2016-02-16 Thomas G. Mertens

We focus on the study of the exact solution corresponding to charged AdS black holes surrounded by quintessence with a cloud of strings present in higher dimensional spacetime. We then investigate its corresponding thermodynamic criticality…

High Energy Physics - Theory · Physics 2020-09-02 M. Chabab , S. Iraoui

Motivated by the desire to better understand finite-temperature holography for three-dimensional Schroedinger spacetimes, we: i) construct a four-parameter family of warped black string solutions of type IIB supergravity and ii) find the…

High Energy Physics - Theory · Physics 2015-06-12 Stephane Detournay , Monica Guica

A complete thermodynamical analysis for a binary mixture of viscous Korteweg fluids with two velocities and two temperatures is developed. The constitutive functions are allowed to depend on the diffusion velocity and the specific internal…

Fluid Dynamics · Physics 2021-09-23 Matteo Gorgone , Francesco Oliveri , Patrizia Rogolino

This entry is aimed at describing cloud physics with an emphasis on fluid dynamics. As is inevitable for a review of an enormously complicated problem, it is highly selective and reflects of the authors' focus. The range of scales involved,…

Fluid Dynamics · Physics 2021-02-23 S. Ravichandran , Jason R. Picardo , Samriddhi Sankar Ray , Rama Govindarajan

We investigate the thermodynamic behavior of a spherically symmetric Anti-de Sitter black hole in Mod(A)Max electrodynamics surrounded by a cloud of strings. Within the extended phase-space framework, we treat the cosmological constant as a…

General Physics · Physics 2026-02-24 Faizuddin Ahmed , Ahmad Al-Badawi , Edilberto O. Silva

I solve the equations of the low-energy limit of string theory to obtain a solution corresponding to a microcanonical ensemble of highly-excited superstrings. This ``Superball of Strings'' is a static, spherically symmetric ``fuzzball'' of…

High Energy Physics - Theory · Physics 2026-05-06 Yoav Zigdon

This paper presents an exact solution of Bardeen black hole in presence of massive gravity, which is characterized by the additional parameter $m$. Here, we focus on $4D$ Bardeen AdS massive black hole solutions as example to discuss the…

General Relativity and Quantum Cosmology · Physics 2020-04-29 Benoy Kumar Singh , Raj Pal Singh , Dharm Veer Singh

We obtain the metric which describes the spacetime corresponding to the Frolov black hole in the presence of a cloud of strings and discuss how this cloud affects the regularity of the solution and the energy conditions. In addition, we…

General Relativity and Quantum Cosmology · Physics 2026-01-14 F. F. Nascimento , J. C. Rocha , V. B. Bezerra , J. M. Toledo

An ensemble of short open strings in equilibrium with the heat bath provided by the Euclidean worldvolume of a stack of Dbranes undergoes a thermal phase transition to a long string phase. The transition temperature is just below the string…

High Energy Physics - Theory · Physics 2009-11-07 Shyamoli Chaudhuri

We present an exact four-dimensional black string solution immersed in perfect fluid dark matter within an anti-de Sitter background. By solving the Einstein field equations for an anisotropic fluid, we obtain a metric function that…

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

Motivated by high interest in the close relation between string theory and black hole solutions, in this paper, we take into account the Einstein-Gauss-Bonnet Lagrangian in the context of massive gravity. We examine the possibility of black…

High Energy Physics - Theory · Physics 2016-02-23 S. H. Hendi , S. Panahiyan , B. Eslam Panah

In this paper, we study the influence of string fluids on the extended thermodynamic structure and microscopic interactions of Hayward black holes by employing thermodynamic geometry as an empirical tool. Using the novel equation of state…

General Relativity and Quantum Cosmology · Physics 2025-07-01 Ankit Anand , Saeed Noori Gashti , Aditya Singh

The de Rham-Gabadadze-Tolley (dRGT) black string solution is a cylindrically symmetric and static solution of the Einstein field equation with graviton mass term. For the asymptotically de Sitter (dS) solution, it is possible to obtain the…

General Relativity and Quantum Cosmology · Physics 2022-11-21 Peerawat Sriling , Ratchaphat Nakarachinda , Pitayuth Wongjun

Isothermal interfacial zones are investigated starting from a local energy which can be considered as the sum of two terms: one corresponding to a medium with a uniform composition equal to the local one and a second one associated with the…

Mathematical Physics · Physics 2008-12-18 Henri Gouin