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Fermionic steering in multi-event horizon spacetime
Published 2025-01-01“…Abstract We investigate quantum steering of Dirac field for different types of Bell states in Schwarzschild–de Sitter (SdS) spacetime that has a black hole event horizon (BEH) and a cosmological event horizon (CEH). …”
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Thermodynamics of the FRW Universe at the Event Horizon in Palatini f(R) Gravity
Published 2018-01-01“…In an accelerated expanding universe, one can expect the existence of an event horizon. It may be interesting to study the thermodynamics of the Friedmann-Robertson-Walker (FRW) universe at the event horizon. …”
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Surface gravity analysis in Gauss-Bonnet and Barrow black holes
Published 2025-02-01Subjects: “…Black holes event horizon…”
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The Relation between the Quasi-Localized Energy-Momentum Complexes and the Thermodynamic Potential for the Schwarzschild-de Sitter Black Hole
Published 2017-01-01“…Here M is the patch between cosmological event horizon and black hole event horizon of the SdS black hole solution. …”
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Resonance Spectra of Caged Stringy Black Hole and Its Spectroscopy
Published 2015-01-01“…For this purpose, we assume that the GHSBH has a confining cavity (mirror) placed in the vicinity of the event horizon. We then show how the complex resonant frequencies of the caged GHSBH are computed using the Bessel differential equation that arises when the scalar perturbations around the event horizon are considered. …”
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Quantum Radiation Properties of Dirac Particles in General Nonstationary Black Holes
Published 2014-01-01“…Quantum radiation properties of Dirac particles in general nonstationary black holes in the general case are investigated by both using the method of generalized tortoise coordinate transformation and considering simultaneously the asymptotic behaviors of the first-order and second-order forms of Dirac equation near the event horizon. It is generally shown that the temperature and the shape of the event horizon of this kind of black holes depend on both the time and different angles. …”
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Hierarchical relationship of nonlocal correlations in Schwarzschild-de Sitter spacetime
Published 2025-01-01“…This study contributes to integrating quantum resource theory within the context of multi-event horizon black holes.…”
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Periodic orbits and gravitational wave radiation in short hair black hole spacetimes for an extreme mass ratio system
Published 2025-01-01“…Abstract For a short hair black hole(BH) that bypasses the “no-short-hair” theorem, its hair parameters have a significant impact near the event horizon and may thus carry the internal information of the BH. …”
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Cryptographic Censorship
Published 2025-01-01“…We first prove “Cryptographic Censorship”: a theorem showing that when the time evolution operator of a holographic CFT is approximately pseudorandom (or Haar random) on some code subspace, then there must be an event horizon in the corresponding bulk dual. This result provides a general condition that guarantees (in finite time) event horizon formation, with minimal assumptions about the global spacetime structure. …”
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Thermodynamics of Ricci-Gauss-Bonnet Dark Energy
Published 2018-01-01“…It is found that this law exhibits the validity on both apparent and event horizons except for the case of logarithmic entropic correction at apparent horizon. …”
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Quantum Radiation Properties of General Nonstationary Black Hole
Published 2017-01-01“…The locations of the event horizon and the Hawking temperature depend on both time and angles. …”
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H-AMR FORGE’d in FIRE. I. Magnetic State Transitions, Jet Launching, and Radiative Emission in Super-Eddington, Highly Magnetized Quasar Disks Formed from Cosmological Initial Cond...
Published 2025-01-01“…To answer this, we must follow the gas to the event horizon. For this, we interpolated the quasar into the general-relativistic radiation magnetohydrodynamics code H-AMR and performed 3D simulations with BH spins a = 0 and a = 0.9375. …”
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The Quantization of a Kerr-AdS Black Hole
Published 2018-01-01“…The stationary eigenfunctions can be interpreted as radiation and the temporal ones as gravitational waves. The event horizon corresponds in the quantum model to a Cauchy hypersurface that can be crossed by causal curves in both directions such that the information paradox does not occur. …”
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Barrow holographic dark energy: a path to reconstructing f(R, T) gravity
Published 2024-12-01“…The numerical results are subsequently presented for various infrared cutoffs, such as the Hubble horizon, future event horizon, and Granda–Oliveros cutoff.…”
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Analyzing Black Hole Super-Radiance Emission of Particles/Energy from a Black Hole as a Gedankenexperiment to Get Bounds on the Mass of a Graviton
Published 2014-01-01“…This leads to a fork in the road between two alternatives with the possibility of needing a multiverse containment of BH structure or embracing what Hawkings wrote up recently, namely, a redo of the event horizon hypothesis as we know it.…”
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Modified Fermions Tunneling Radiation from Nonstationary, Axially Symmetric Kerr Black Hole
Published 2019-01-01“…Then, the tunneling behavior of fermions at the event horizon of nonstationary symmetric Kerr black hole is investigated. …”
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Super-entropy bumblebee AdS black holes
Published 2025-02-01“…For this purpose, first, we evaluate the effect of the bumblebee field (or Lorentz-violating parameter) on the event horizon for AdS black holes. Then, in non-extended phase space, we study the effect of the bumblebee field on the heat capacity and the Helmholtz free energy to investigate the local and global thermal stability areas, respectively. …”
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Thermodynamic Analysis of the Static Spherically Symmetric Field Equations in Rastall Theory
Published 2016-01-01“…In addition, we use the zero-zero component of the Rastall field equations as well as the unified first law of thermodynamics to find the Misner-Sharp mass content confined to the event horizon of the spherically symmetric static spacetimes in the Rastall framework. …”
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Discussion of a Possible Corrected Black Hole Entropy
Published 2018-01-01“…Furthermore, we point out that the Einstein gravity and EiBI gravity might be equivalent on the event horizon. At last, under EiBI gravity with the electromagnetic field, a specific corrected entropy of black hole is given.…”
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Influence of Lorentz Invariation Violation on Arbitrary Spin Fermion Tunneling Radiation in the Vaidya-Bonner Space-Time
Published 2020-01-01“…By solving the equation, the modified tunneling rate of fermions with arbitrary spin, Hawking temperature, and entropy at the event horizon of the Vaidya-Bonner black hole are presented. …”
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