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Entropy Spectrum of black holes of Heterotic String Theory via Adiabatic Invariance

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Communications in Theoretical Physics 2012年第10期58卷 509-512页

作者： Alexis Larranaga Luis Cabarique Manuel Londono National Astronomical Observatory National University of Colombia Department of Physics National University of Colombia

Using adiabatic invariance and the Bohr-Sommerfeld quantization rule we investigate the entropy spectroscopy of two black holes of heterotic string theory,the charged GMGHS and the rotating Sen *** is shown that the entropy spectrum is equally spaced in both cases,identically to the spectrum obtained before for Schwarzschild,Reissner-Nordstr？m and Kerr black *** the adiabatic invariance method does not use quasinormal mode analysis,there is no need to impose the small charge or small angular momentum limits and there is no confusion on whether the real part or the imaginary part of the modes is responsible for the entropy spectrum.

关键词： quantum aspects of black holes thermodynamics strings and branes

Charged black holes in the infinite derivative theory of gravity

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Communications in Theoretical Physics 2022年第1期74卷 77-83页

作者： Yong Xiao Longting Zhang Key Laboratory of High-precision Computation and Application of quantum Field Theory of Hebei Province College of Physical Science and TechnologyHebei UniversityBaoding 071002China

The infinite derivative theory of gravity is a generalization of Einstein gravity with many interesting properties,but the black hole solutions in this theory are still not fully *** the paper,we concentrate on studying the charged black holes in such a *** the electromagnetic field part to the effective action,we show how the black hole solutions around the Reissner-Nordstrom metric can be solved perturbatively and *** further calculate the corresponding temperature,entropy and electrostatic potential of the black holes and verify the first law of thermodynamics.

关键词： quantum aspects of black holes black hole thermodynamics modified theories of gravity

Entropic Forces in a Kerr Geometry: a Link with Rotational Properties

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Communications in Theoretical Physics 2011年第4期55卷 594-596页

作者： A.Curir INAF-Astronomical Observatory of Torino

The recent thermodynamical interpretation of the field equations of gravity is revisited and extended to the killing horizons linked to the rotation （Kerr black holes）. An entropic force can be defined also for these horizons which are not event horizons but show thermodynamical features that in previous works were used to explain the rotational properties of Kerr solutions. Such entropic force is needed to describe the energetic processes, which do not change the usual thermal entropy of the rotating black hole （reversible transformations, superradiance）.

关键词： quantum aspects of black holes evaporation thermodynamics

On Thermodynamical Relation Between Rotating Charged BTZ black holes and Effective String Theory

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Communications in Theoretical Physics 2008年第12期50卷 1341-1344页

作者： Alexis Larraaga National

In this paper we study the first law of thermodynamics for the （2＋1）-dimensional rotating charged BTZ black hole considering a pair of thermodynamical systems constructed with the two horizons of this solution. We show that these two systems are similar to the right and left movers of string theory and that the temperature associated with the black hole is the harmonic mean of the temperatures associated with these two systems.

关键词： quantum aspects of black holes thermodymics classical black holes strings and branes

On Hawking Radiation from a Charged black Hole of Heterotic String Theory

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Communications in Theoretical Physics 2014年第4期61卷 491-494页

作者： Alexis Larraaga National Astronomical Observatory National University of Colombia

We investigate the Hawking radiation of a GMGHS charged black hole from the heterotic string scenario by the massive particles turmeling method. We consider the spacetime background to be dynamical, incorporate the self-gravitation effect of the emitted particles and show that the tunneling rate is related to the change of Bekenstein- Hawking entropy and the derived emission spectrum does not deviate from the pure thermal spectrum of Schwrzschild＇s black hole.

关键词： quantum aspects of black holes thermodynamics strings and branes

Entropy Corrections for a Charged black Hole of String Theory

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Communications in Theoretical Physics 2011年第1期55卷 72-74页

作者： Alexis Larraaga National University of Colombia National Astronomical Observatory

We study the entropy of the Gibbons-Maeda-Garfinkle-Horowitz-Strominger （GMGHS） charged black hole, originated from the effective action that emerges in the low-energy of string theory, beyond semiclassical approxi- mations. Applying the properties of exact differentials for three variables to the first law thermodynamics we derive the quantum corrections to the entropy of the black hole. The leading （logarithmic） and non leading corrections to the area law are obtained.

关键词： quantum aspects of black holes thermodynamics strings and branes

Hawking radiation of Dirac particles from soft-hairy black holes

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Communications in Theoretical Physics 2022年第4期74卷 68-71页

作者： Wen-Jie Zhang Pu-Jian Mao Jun-Bao Wu Center for Joint quantum Studies and Department of Physics School of ScienceTianjin University University135 Yaguan RoadTianjin 300350China

In this paper,we study the Hawking radiation of Dirac particles via tunneling formalism from linearly supertranslated Schwarzschild black *** find that the radiation spectrum and the Hawking temperature remain the sam... 详细信息

关键词： quantum aspects of black holes quantum field theory in curved spacetime black hole thermodynamics