Results 1 to 10 of about 51,156 (181)
A comparative artificial neural networks for Schwarzschild black hole (SBH) radius
Physics OpenIt is consensus among researchers that the data for the black holes is complicated and extremely non-linear in nature. Therefore, it remains a challenging task for them to predict the key characteristics of concerned black holes accurately.
Khalil Ur Rehman +2 more
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Extremely small stars in scalar-tensor gravity: When stellar radius is less than Schwarzschild one
Nuclear Physics BWe show analytically that there exist compact stellar objects akin to neutron stars whose radius is smaller than the Schwarzschild radius defined by Arnowitt-Deser-Misner (ADM) mass.
Shin'ichi Nojiri +2 more
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Static black hole and vacuum energy: thin shell and incompressible fluid
Journal of High Energy Physics, 2018 With the back reaction of the vacuum energy-momentum tensor consistently taken into account, we study static spherically symmetric black-hole-like solutions to the semi-classical Einstein equation.
Pei-Ming Ho, Yoshinori Matsuo
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The Quantum Relative Entropy of the Schwarzschild Black Hole and the Area Law [PDF]
EntropyThe area law obeyed by the thermodynamic entropy of black holes is one of the fundamental results relating gravity to statistical mechanics. In this work, we provide a derivation of the area law for the quantum relative entropy of the Schwarzschild black
Ginestra Bianconi
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The Radius of the Schwarzschild Black Hole in Noncommutative Space with GUP
Physics Procedia, 2011 AbstractVarious theories of Quantum Gravity predict modifications of the Heisenberg Uncertainty Principle near the Planck scale to a so called Generalized Uncertainty Principle (GUP) which predict the existence of a minimum observable length or a maximum observable momentum.
Fatemeh Ahmadi
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Quasinormal modes and shadow of noncommutative black hole [PDF]
Scientific Reports, 2022 In this paper we investigate quasinormal modes (QNM) for a scalar field around a noncommutative Schwarzschild black hole. We verify the effect of noncommutativity on quasinormal frequencies by applying two procedures widely used in the literature.
J. A. V. Campos +3 more
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European Physical Journal C: Particles and FieldsUsing effective field theory methods, we derive the Carrollian analog of the geodesic action. We find that it contains both “electric” and “magnetic” contributions that are in general coupled to each other.
Luca Ciambelli, Daniel Grumiller
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Schwarzschild Radius from Monte Carlo Calculation of the Wilson Loop in Supersymmetric Matrix Quantum Mechanics [PDF]
Physical Review Letters, 2009 In the string/gauge duality it is important to understand how the space-time geometry is encoded in gauge theory observables. We address this issue in the case of the D0-brane system at finite temperature T. Based on the duality, the temporal Wilson loop operator W in gauge theory is expected to contain the information of the Schwarzschild radius R_ ...
Masanori Hanada +2 more
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Waves in cosmological background with static Schwarzschild radius in the expanding universe
Journal of Mathematical PhysicsIn this paper, we prove the existence of global in time small data solutions of semilinear Klein–Gordon equations in space-time with a static Schwarzschild radius in the expanding universe.
Karen Yagdjian
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Inner radius and energy conditions of dark matter halos surrounding Schwarzschild black holes
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsWe study a class of analytic models for a dark matter halo surrounding a Schwarzschild black hole sitting at the center of a galaxy, with a variable inner radius $r_{\text{in}}$ at which the density profile of the dark matter halo vanishes. We examine in detail how the three energy conditions are satisfied in such models.
AnZhong Wang, Shaoyu Yin
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