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Stimulated emission by black holes is discussed in light of the analogue gravity program. We first consider initial quantum states containing a definite number of particles, and then we take into account the case where the initial state is…

广义相对论与量子宇宙学 · 物理学 2016-03-16 F. Belgiorno , S. L. Cacciatori

Robinson-Wilczek's recent work, which treats Hawking radiation as a compensating flux to cancel gravitational anomaly at the horizon of a Schwarzschild-type black hole, is extended to study Hawking radiation of rotating black holes in…

高能物理 - 理论 · 物理学 2008-11-26 Qing-Quan Jiang , Shuang-Qing Wu

Black holes are a common feature of the Universe. They are observed as stellar mass black holes spread throughout galaxies and as supermassive objects in their centres. Observations of stars orbiting close to the centre of our Galaxy…

高能天体物理现象 · 物理学 2019-11-12 Andrew C. Fabian , Anthony N. Lasenby

Recent developments in the study of primordial black holes (PBHs) are reviewed, with particular emphasis on their formation and evaporation. It is still not clear whether PBHs formed but, if they did, they could provide a unique probe of…

天体物理学 · 物理学 2007-05-23 B. J. Carr

The creation of spacetimes with horizons is discussed, focussing on baby universes and black holes as examples. There is a complex interplay of quantum theory and General Relativity in both cases, leading to consequences for the future of…

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

This paper is devoted to investigate the structure of the pseudo-Newtonian force and potential of the stringy black holes. We discuss conditions for the force character from an attractive to repulsive. It is also found that the force will…

广义相对论与量子宇宙学 · 物理学 2011-09-29 M. Sharif

Black holes represent outstanding astrophysical laboratories to test the strong gravity regime, since alternative theories of gravity may predict black hole solutions whose may differ distinctly from those of General Relativity. When higher…

广义相对论与量子宇宙学 · 物理学 2022-03-03 Jose Luis Blázquez-Salcedo , Burkhard Kleihaus , Jutta Kunz

The current understanding of the formation of powerful bi-directional jets in systems such as radio galaxies and quasars is that the process involves a supermassive black hole that is being fed with magnetized gas through an orbiting…

高能天体物理现象 · 物理学 2009-03-25 C Sivaram , Kenath Arun

We argue that the following three statements cannot all be true: (i) Hawking radiation is in a pure state, (ii) the information carried by the radiation is emitted from the region near the horizon, with low energy effective field theory…

高能物理 - 理论 · 物理学 2015-06-05 Ahmed Almheiri , Donald Marolf , Joseph Polchinski , James Sully

The Horizon Quantum Mechanics is an approach that allows one to analyse the gravitational radius of spherically symmetric systems and compute the probability that a given quantum state is a black hole. We first review the (global) formalism…

广义相对论与量子宇宙学 · 物理学 2018-05-09 Roberto Casadio , Andrea Giugno , Andrea Giusti , Octavian Micu

This resource letter is designed to guide students, educators, and researchers through (some of) the literature on black holes. Both the physics and astrophysics of black holes are discussed. Breadth has been emphasized over depth, and…

天体物理学 · 物理学 2009-07-06 Elena Gallo , Don Marolf

We illustrate how Hawking's radiance from a Schwarzschild black hole is modified by the electrostatic self-interaction of the emitted charged particles. A W.K.B approximation shows that the probability for a self-interacting charged…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Avraham E. Mayo

We study the Hawking radiation from Rotating black holes from gravitational anomalies point of view. First, we show that the scalar field theory near the Kerr black hole horizon can be reduced to the 2-dimensional effective theory. Then,…

高能物理 - 理论 · 物理学 2009-11-11 Keiju Murata , Jiro Soda

Recent developments in the study of primordial black holes (PBHs) will be reviewed, with particular emphasis on their formation and evaporation. PBHs could provide a unique probe of the early Universe, gravitational collapse, high energy…

天体物理学 · 物理学 2015-06-24 B. J. Carr

It is shown that space curvature can be disposed of by properly taking into account gravitational self energies. This leads to a parameter free modification of Newton's law, violating Gauss theorem, which accounts for the crucial tests of…

综合物理 · 物理学 2011-12-09 Paolo Christillin

Simulation and experimental realization of acoustic black holes in analogue gravity systems have lead to a novel understanding of relevant phenomena such as Hawking radiation or superradiance. We explore here the possibility to use…

广义相对论与量子宇宙学 · 物理学 2017-09-20 Luca Giacomelli , Stefano Liberati

It has been conjectured that Micro Black Holes (MBH) may be formed in the presence of large extra dimensions. These MBHs have very small mass and they decay almost instantaneously. Taking into consideration quantum effects, they should…

高能物理 - 唯象学 · 物理学 2013-12-17 Saeede Nafooshe , Martin O'Loughlin , Maria Vittoria Garzelli

Black holes in general relativity are characterized by their trapping horizon, a one-way membrane that can be crossed only inwards. The existence of trapping horizons in astrophysical black holes can be tested observationally using a…

广义相对论与量子宇宙学 · 物理学 2018-06-27 Raúl Carballo-Rubio , Pawan Kumar , Wenbin Lu

Using canonical typicality method, we reconsider the study of dark energy effects on four dimensional black holes. Concretely, we investigate the associated influences on the spectrum of various black hole backgrounds including the charged…

高能物理 - 理论 · 物理学 2019-12-19 A. Belhaj , A. El Balali , W. El Hadri , H. El Moumni , M. B. Sedra

The final stage of black hole evaporation is a potent probe of physics beyond the Standard Model: Hawking-Bekenstein radiation may be affected by quantum gravity "memory burden effects", or by the presence of "dark",…

高能物理 - 唯象学 · 物理学 2024-11-27 Kevin Federico , Stefano Profumo