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Motivated by the existence of black holes with various topologies in four-dimensional spacetimes with a negative cosmological constant, we study axisymmetric static solutions describing any large distortions of Schwarzschild-anti-de Sitter…

General Relativity and Quantum Cosmology · Physics 2009-11-11 A. Tomimatsu

Cosmic strings inside Schwarzschild black holes in teleparallel gravity are considered.Torsion flux inside the black hole is compute like a torsion vortex on a superfluid.Since some components of torsion are singular on Schwarzschild…

General Relativity and Quantum Cosmology · Physics 2007-05-23 L. C. Garcia de Andrade

The negative mode of the Schwarzschild black hole is central to Euclidean quantum gravity around hot flat space and for the Gregory-Laflamme black string instability. We analyze the eigenvalue as a function of space-time dimension by…

High Energy Physics - Theory · Physics 2008-11-26 Vadim Asnin , Dan Gorbonos , Shahar Hadar , Barak Kol , Michele Levi , Umpei Miyamoto

In this paper we study thermodynamics, statistics and spectroscopic aspects of a charged black hole with a scalar hair coupled to the gravity in (2+1) dimensions. We obtained effects of the black hole charge and scalar field on the…

High Energy Physics - Theory · Physics 2015-06-16 J. Sadeghi , H. Farahani

In this paper we study the Schwarzschild AdS black hole with a cloud of string background in an extended phase space and investigate a new phase transition related to the topological charge. By treating the topological charge as a new…

High Energy Physics - Theory · Physics 2019-03-15 Hossein Ghaffarnejad , Mohammad Farsam

It is well-known that unlike its chargeless version the charged Banados-Teitelboim-Zanelli (BTZ) black hole solution in 2+1- dimensional spacetime is singular. We construct a charged, regular extension of the BTZ black hole solution by…

General Relativity and Quantum Cosmology · Physics 2012-02-13 S. Habib Mazharimousavi , M. Halilsoy , T. Tahamtan

We present a formalism for studying the thermodynamics of black holes in dilaton gravity. The thermodynamic variables are defined on a quasilocal surface surrounding the black hole system and are obtained from a general class of Lagrangians…

General Relativity and Quantum Cosmology · Physics 2007-05-23 J. D. E. Creighton , R. B. Mann

The quantum fluctuations of the flux tube joining two static sources in the confining phase of a lattice gauge theory are described by an effective string theory. The predictions of the latter for ratios of Wilson loops of equal perimeter…

High Energy Physics - Lattice · Physics 2009-10-28 P. Provero

Spacetime quantization predicts the existence of minimal length and time-interval. Within 5-dimensional Schwarzschild-like black string background, the tunneling of scalar particles, fermions and massive bosons are first studied together in…

High Energy Physics - Theory · Physics 2016-09-09 Xiang-Qian Li

This thesis is devoted to trying to find a microscopic quantum description of black holes. We consider black holes in string theory which is a quantum theory of gravity. We find that the ``area law'' black hole entropy for extremal and…

High Energy Physics - Theory · Physics 2008-02-03 Juan M. Maldacena

Effective field theories break down inside large black holes on macroscopic scales when tidal forces are string-sized. If $r_0$ is the horizon radius and $\alpha'$ is the square of the string scale, the 4D Schwarzschild interior is strongly…

High Energy Physics - Theory · Physics 2024-11-12 Yoav Zigdon

Charged black holes, both spherically symmetric and rotating, in the low energy limit of string theory (Einstein-Maxwell-dilaton theory) are compared to analogous geometries in pure general relativity. We describe various physical…

General Relativity and Quantum Cosmology · Physics 2007-05-23 R. Casadio , B. Harms

In this study, we explore the thermodynamic properties of a Schwarzschild black hole (BH) embedded in an anti-de Sitter (AdS) background, which is further coupled with a cloud of strings and surrounded by a quintessence-like fluid.…

General Relativity and Quantum Cosmology · Physics 2025-12-23 Faizuddin Ahmed , Saeed Noori Gashti , Behnam Pourhassan , Abdelmalek Bouzenada

In this work, energy distribution and thermodynamics are investigated in the Schwarzschild black hole spacetime when considering corrections due to quantum vacuum fluctuations. The Einstein and M{\o}ller prescriptions were used to derive…

General Relativity and Quantum Cosmology · Physics 2017-09-13 Mahamat Saleh , Bouetou Bouetou Thomas , Kofane Timoleon Crepin

By foliating the four-dimensional C-metric black hole spacetime, we consider a kind of initial-value-like formulation of the vacuum Einstein's equation, the holographic initial data is a double consisting of the induced metric and the…

General Relativity and Quantum Cosmology · Physics 2017-04-07 Xin Hao , Bin Wu , Liu Zhao

Recently, it is reported that thermal fluctuations, which are interpreted as quantum effects, modify the black holes entropy by an exponential term. We now find the effect of such modification on the black hole mass and other thermodynamics…

General Relativity and Quantum Cosmology · Physics 2023-06-02 Behnam Pourhassan

We consider black hole production at the LHC in a generic scenario with many extra dimensions where the Standard Model fields are confined to a brane. With $\sim 20$ dimensions the hierarchy problem is shown to be naturally solved without…

High Energy Physics - Phenomenology · Physics 2009-11-11 JoAnne L. Hewett , Ben Lillie , Thomas G. Rizzo

In this paper we present a method to study the frequency shift of signals sent from near a Schwarzschild black hole that grows or shrinks through accretion. We construct the numerical solution of Einstein's equations sourced by a spherical…

General Relativity and Quantum Cosmology · Physics 2021-10-18 F. S. Guzman , I. Alvarez-Rios , J. A. Gonzalez

In this letter, we derive the singular condition for black holes and demonstrate the potential resolution of the Schwarzschild black hole singularity in general relativity using non-perturbative $\alpha^{\prime}$ corrections of string…

High Energy Physics - Theory · Physics 2026-02-10 Houwen Wu , Zihan Yan , Shuxuan Ying

We discuss black hole thermodynamics in the manifestly duality invariant formalism of double field theory (DFT). We reformulate and prove the first law of black hole thermodynamics in DFT, using the covariant phase space approach. After…

High Energy Physics - Theory · Physics 2017-10-31 Alex S. Arvanitakis , Chris D. A. Blair