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We solve the Klein-Gordon equation for a scalar field, in the background geometry of a dust cloud collapsing to form a black hole, everywhere in the (1+1) spacetime: that is, both inside and outside the event horizon and arbitrarily close…

广义相对论与量子宇宙学 · 物理学 2015-07-07 Sumanta Chakraborty , Suprit Singh , T. Padmanabhan

We analyse the physical properties of an analytical, nonsingular quantum-corrected black hole solution recently derived in a minisuperspace model for unimodular gravity under the assumption of unitarity in unimodular time. We show that the…

广义相对论与量子宇宙学 · 物理学 2026-02-02 Steffen Gielen , Sofie Ried

Black hole solutions are explored in the Lorentz gauge theory of gravity. The fields of the theory are the gauge potential in the adjoint and a scalar in the fundamental representation of the Lorentz group, a metric tensor then emerging as…

广义相对论与量子宇宙学 · 物理学 2024-09-06 Tomi S. Koivisto , Luxi Zheng

A universal prediction of quantum gravity is that the dynamics of general relativity is augmented by interactions that are of higher order in the spacetime curvature. Numerical explorations indicate that such terms may have a drastic impact…

广义相对论与量子宇宙学 · 物理学 2025-02-20 Jesse Daas , Cristobal Laporte , Frank Saueressig , Tim van Dijk

We study the gravitational collapse of a self-gravitating charged scalar-field. Starting with a regular spacetime, we follow the evolution through the formation of an apparent horizon, a Cauchy horizon and a final central singularity. We…

广义相对论与量子宇宙学 · 物理学 2015-06-25 Shahar Hod , Tsvi Piran

The theory of higher derivative gravity is proposed to solve the non-renormalizable problem in quantum gravity.In this article, We use two numerical methods to fit another static spherically symmetric black hole besides the Schwarzschild…

广义相对论与量子宇宙学 · 物理学 2024-01-09 Jin-Bo He

The combined action of gravity and quantum mechanics gives rise to a minimum time uncertainty in the lowest order approximation of a perturbative scheme, in which quantum effects are regarded as corrections to the classical spacetime…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Pablo Galan , Luis J. Garay , Guillermo A. Mena Marugan

Quadratic gravity constitutes a prototypical example of a perturbatively renormalizable quantum theory of the gravitational interactions. In this work, we construct the associated phase space of static, spherically symmetric, and…

广义相对论与量子宇宙学 · 物理学 2023-05-10 Jesse Daas , Kolja Kuijpers , Frank Saueressig , Michael F. Wondrak , Heino Falcke

We study spherical charged black holes in the presence of a cosmological constant with corrections motivated by the theory of loop quantum gravity. The effective theory is constructed at the Hamiltonian level by introducing certain…

广义相对论与量子宇宙学 · 物理学 2023-04-12 Asier Alonso-Bardaji , David Brizuela , Raül Vera

New, simple models of ``black hole interiors'', namely spherically symmetric solutions of the Einstein field equations in matter matching the Schwarzschild vacuum at spacelike hypersurfaces ``R<2M'' are constructed. The models satisfy the…

广义相对论与量子宇宙学 · 物理学 2010-11-19 Giulio Magli

For any non-rotating effective quantum (uncharged) black hole model to be viable, its asymptotic structure of spacetime should reduce to that of a Schwarzschild black hole. After examining the asymptotic structure of quantum black holes…

广义相对论与量子宇宙学 · 物理学 2020-08-05 Mariam Bouhmadi-López , Suddhasattwa Brahma , Che-Yu Chen , Pisin Chen , Dong-han Yeom

Getting the mathematical rules for quantised black holes correctly is far from straightforward. Many earlier treatises got it not quite correctly. The general relativistic transformation linking the distant observer (who only detects…

广义相对论与量子宇宙学 · 物理学 2019-02-28 Gerard t Hooft

In this paper the entropy of an eternal Schwarzschild black hole is studied in the limit of infinite black hole mass. The problem is addressed from the point of view of both canonical quantum gravity and superstring theory. The entropy per…

高能物理 - 理论 · 物理学 2009-10-07 L. Susskind , J. Uglum

It is well known that general relativity is an effective theory of gravity at low energy scale, and actually quantum effects cannot be ignored in the strong-field regime. As a strong gravitational object, black hole plays a key role in…

广义相对论与量子宇宙学 · 物理学 2022-03-23 Qi-Ming Fu , Xin Zhang

Understanding the end state of black hole evaporation, the microscopic origin of black hole entropy, the information loss paradox, and the nature of the singularity arising in gravitational collapse - these are outstanding challenges for…

广义相对论与量子宇宙学 · 物理学 2014-11-17 T. P. Singh , Cenalo Vaz

We propose a quantum gravity equation owing to the geometrical quantization of general relativity, namely the Schr\"{o}dinger-Einstein equation. Quantum effects of a Schwarzschild black hole are demonstrated by solving the quantum equation…

综合物理 · 物理学 2022-05-24 Yoshimasa Kurihara

We study the backwards-in-time stability of the Schwarzschild singularity from a dynamical PDE point of view. More precisely, considering a spacelike hypersurface $\Sigma_0$ in the interior of the black hole region, tangent to the singular…

广义相对论与量子宇宙学 · 物理学 2016-07-20 Grigorios Fournodavlos

The black hole information paradox forces us into a strange situation: we must find a way to break the semiclassical approximation in a domain where no quantum gravity effects would normally be expected. Traditional quantizations of gravity…

高能物理 - 理论 · 物理学 2015-06-05 Samir D. Mathur

Modelling the free fall (and radiative phenomenology) of a massive particle, charged or not, in a static and spherically symmetric black hole is a classic, good relativistic dare that produced a remarkable series of papers, mainly in the…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Gianluca Cruciani

The Planckon densely piled model of vacuum is proposed. Based on this model, the microscopic quantum structure of Schwarzschild black hole and quantum statistical origin of its gravity are studied. The cutoff of black hole horizon leads to…

综合物理 · 物理学 2014-10-29 Shun-Jin Wang
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