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We thoroughly investigate conformally Schwarzschild spacetimes in different coordinate systems to seek for physically reasonable models of a cosmological black hole. We assume that a conformal factor depends only on the time coordinate and…

广义相对论与量子宇宙学 · 物理学 2023-03-14 Takuma Sato , Hideki Maeda , Tomohiro Harada

The one-loop quantum corrections to geometry and thermodynamics of black hole are studied for the two-dimensional RST model. We chose boundary conditions corresponding to the eternal black hole being in the thermal equilibrium with the…

高能物理 - 理论 · 物理学 2009-10-28 Sergey N. Solodukhin

Within the framework of general relativity, we explore the interior of the Schwarzschild black hole before complete collapse occurs, finding that the exterior is perfectly compatible with a source much more complex than a pointlike mass. We…

广义相对论与量子宇宙学 · 物理学 2024-05-14 J. Ovalle

We show that a semi-classical polymerization of the interior of Schwarzschild black holes gives rise to a tantalizing candidate for a non-singular, single horizon black hole spacetime. The exterior has non-zero quantum stress energy but…

广义相对论与量子宇宙学 · 物理学 2009-11-06 A. Peltola , G. Kunstatter

We investigate gravitational quasinormal modes of the Dymnikova black hole, a regular spacetime in which the central singularity is replaced by a de Sitter core. This geometry, originally proposed as a phenomenological model, also arises…

广义相对论与量子宇宙学 · 物理学 2026-01-27 Bekir Can Lütfüoğlu , Erdinç Ulaş Saka , Abubakir Shermatov , Inomjon Ibragimov , Javlon Rayimbaev , Sokhibjan Muminov

We study the quantum gravitational effects in spherically symmetric black hole spacetimes. The effective quantum spacetime felt by a point-like test mass is constructed by ``renormalization group improving'' the Schwarzschild metric. The…

高能物理 - 理论 · 物理学 2009-10-31 A. Bonanno , M. Reuter

Bardeen regular black hole is commonly considered as a solution of general relativity coupled to a nonlinear electrodynamics. In this paper, it is shown that the Bardeen solution may be interpreted as a quantum-corrected Schwarzschild black…

广义相对论与量子宇宙学 · 物理学 2018-12-06 R. V. Maluf , Juliano C. S. Neves

In this Letter we derive the gravity field equations by varying the action for an ultraviolet complete quantum gravity. Then we consider the case of a static source term and we determine an exact black hole solution. As a result we find a…

广义相对论与量子宇宙学 · 物理学 2011-02-22 Leonardo Modesto , John W. Moffat , Piero Nicolini

Studies of quasinormal modes (QNMs) of black holes have a long and well established history. Predominantly, much research in this area has customarily focused on the equations given by Regge, Wheeler and Zerilli. In this work we study…

广义相对论与量子宇宙学 · 物理学 2025-02-05 Bishop Mongwane , Sipho Nkele , Didam G. A. Duniya , Nigel T. Bishop

We discuss quantum black holes in asymptotically safe quantum gravity with a scale identification based on the Kretschmann scalar. After comparing this scenario with other scale identifications, we investigate in detail the Kerr-(A)dS and…

高能物理 - 理论 · 物理学 2019-02-11 Jan M. Pawlowski , Dennis Stock

We construct four-dimensional gravity theories that resolve the Schwarzschild singularity and enable dynamical studies of nonsingular gravitational collapse. The construction employs a class of nonpolynomial curvature invariants that…

广义相对论与量子宇宙学 · 物理学 2025-10-22 Pablo Bueno , Pablo A. Cano , Robie A. Hennigar , Ángel J. Murcia

Dynamical black-hole scenarios have been developed in loop quantum gravity in various ways, combining results from mini and midisuperspace models. In the past, the underlying geometry of space-time has often been expressed in terms of line…

广义相对论与量子宇宙学 · 物理学 2020-09-30 Martin Bojowald

Based on the perspective that continuum gravitational physics is an emergent quantum gravitational phenomenon, and that spacetime thermodynamic is the natural langauge in which it can be described, we derive a modified Schwarzschild-de…

广义相对论与量子宇宙学 · 物理学 2021-10-29 Luca Marchetti , Giancarlo Cella

It is a common belief that a theory of quantum gravity should ultimately cure curvature singularities which are inevitable within General Relativity, and plague for instance the Schwarzschild and Kerr metrics, usually considered as…

广义相对论与量子宇宙学 · 物理学 2025-01-31 Marco Calzà , Davide Pedrotti , Sunny Vagnozzi

We investigate black hole solutions within a phenomenological approach to quantum gravity based on spacetime thermodynamics developed by Alonso-Serrano and Li\v{s}ka. The field equations are traceless, similarly to unimodular gravity, and…

广义相对论与量子宇宙学 · 物理学 2025-10-08 Ana Alonso-Serrano , Marco de Cesare , Manuel Del Piano

Black Holes have always played a central role in investigations of quantum gravity. This includes both conceptual issues such as the role of classical singularities and information loss, and technical ones to probe the consistency of…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Martin Bojowald

In the paper it is demonstrated that the Schwarzschild black-hole quantum entropy computed within the scope of the Generalized Uncertainty Principle has a nonzero minimum under the assumption that for a radius of the black hole the lower…

综合物理 · 物理学 2013-03-07 Ya. V. Dydyshka , A. E. Shalyt-Margolin

We explore the quantum nature of black holes by introducing an effective framework that takes into account deviations from the classical results. The approach is based on introducing quantum corrections to the classical Schwarzschild…

广义相对论与量子宇宙学 · 物理学 2022-09-14 Emanuele Binetti , Manuel Del Piano , Stefan Hohenegger , Franco Pezzella , Francesco Sannino

In this work we suggest a simplified "quasi-classical" formalism of the Schwarzschild black hole thermodynamics. We define such small quantum system at Schwarzschild black hole horizon surface whose reduced Compton wavelength equals one…

综合物理 · 物理学 2020-09-22 Vladan Pankovic

Recently, there has been an interest in exploring black holes that are regular in the sense that the central curvature singularity is avoided. Here, we depict a method to obtain a regular black hole (RBH) spacetime from the unhindered…

广义相对论与量子宇宙学 · 物理学 2025-02-18 Karim Mosani , Pankaj S. Joshi