The expectation-value equations for the collapse of a macroscopic, spherically symmetric, and uncharged body are integrated up to the limit of validity of semiclassical theory. The collapse finishes with a true stable black hole of the mass microscopically exceeding the vacuum-induced charge. The apparent horizon is almost closed. The most important feature of the solution is the presence of an irremovable Cauchy horizon.
We investigate the effect of quantum correction on Hawking radiation for Schwarzschild black holes. We consider Hawking temperature and entropy to order G^2 and find that the area law of black holes should be modified. We think of Hawking radiation as tunneling and find that at certain frequency ω the radiation spectrum of black holes can be pure blackbody spectrum. Therefore, it is possible to break down information conservation. In order to ensure information conservation at any energy scales, we suggest that black holes cannot release all information they have. We briefly discuss the bound …
The purpose of this paper is to analyse the back reaction problem, between Hawking radiation and the black hole, in a simplified model for the black hole evaporation in the quantum geometrodynamics context. The idea is to transcribe the most important characteristics of the Wheeler-DeWitt equation into a Schrödinger's type of equation. Subsequently, we consider Hawking radiation and black hole quantum states evolution under the influence of a potential that includes back reaction. Finally, entropy is estimated as a measure of the entanglement between the black hole and Hawking radiation states…
In this paper, we study the Hawking radiation of Dirac particles via tunneling formalism from linearly supertranslated Schwarzschild black hole. We find that the radiation spectrum and the Hawking temperature remain the same as the one without soft hair. We extend the same analysis to the linearly supertranslated Vaidya black hole and find that particles can not tunnel through the horizon from the inside. We further comment on the validity of tunneling formalism in the study of Hawking radiation of dynamical black hole.
The scalar radiation emitted by a source in geodesic circular orbit around a regular Bardeen black hole is analyzed. We use the quantum field theory in curved spacetime framework to obtain the emitted power of radiation by computing the one-particle emission amplitude of scalar particles in the curved background. We compare our results to a similar setting in the spacetime of a Reissner-Nordström black hole.
We further the investigation on the Parikh-Kraus-Wilczeck tunneling radiation of Kehagias-Sfetsos black hole under the generalized uncertainty principle. We obtain the entropy difference involving the influence from the inequality. The two terms as generalizations of the Heisenberg's uncertainty promote or retard the emission of this kind of black holes respectively.
The quantum tunneling radiation of fermions with arbitrary spin at the event horizon of Kerr-de Sitter black hole is accurately modified by using the dispersion relation proposed in the study of string theory and quantum gravitational theory. The derived tunneling rate and temperature at the black hole horizons are analyzed and studied.
Low-energy electromagnetic radiation as an indirect probe of black-hole evaporation
研究了黑洞蒸发对光传输的影响。所采用的框架是基于单圈水平的非线性QED有效作用量。我们表明，光锥条件修改为低能量辐射由于黑洞蒸发。我们讨论了这种低能辐射的相速度大于$c$的条件。我们还计算了修改后的光偏转角，这原来是显着不同的黑洞质量范围内的$M_\text{Pl} \ll M \lesssim 10^{19}\;M_\text{Pl}$的标准GR值。
In this paper, we study the GUP (Generalized Uncertainty Principle) modified Hawking radiation of rotating polytropic black hole given in the Boyer-Lindquist coordinates. To this end, the GUP modified Klein-Gordon equation is applied for investigating the quantum tunneling of scalar particles from the polytropic black hole. After reducing the obtained radial wave equation to the one-dimensional Schrödinger equation, we derive the reflection and transmission probabilities of the radiation. A detail discussion on how the reflection and transmission (greybody factor) probabilities are derived for…
Hawking radiation and the Stefan-Boltzmann law: The effective radius of the black-hole quantum atmosphere
最近有人提出[S。B. Giddings，Phys. Lett. B { \bf 754}，39（2016）]，霍金黑洞辐射光谱源自有效的量子“大气”，它远远超出了黑洞视界。特别地，将视界半径为$r_{\text{H}}$的$(3+1)$维史瓦西黑洞的霍金辐射功率与$(3+1)$维平坦空间完美黑体发射体的熟悉的Stefan-Boltzmann辐射功率进行比较，Giddings得出结论，霍金半经典黑洞辐射的来源是史瓦西黑洞之外的量子区域，其有效半径$r_{\text{A}}$由关系式$Δr\equiv r_{\text{A}}-r_{\text{H}}\sim r_{\text{H}}$表征的空穴层位。检验吉丁斯这个有趣的结论的普遍有效性是相当有实际意义的。为此，我们研究了$(D+1)$维Schwarzschild黑洞的霍金辐射。我们发现表征黑洞量子大气的无量纲半径$r_{\text{A}}/r_{\text{H}}$是时空维数PDMATHAMT的递减函数，它是由霍金黑洞辐射功率和$(D+1)$维Stefan-Boltzmann辐射定律确定的.特别是，它表明，辐射$(D+1)$维史瓦西黑洞的特点是由关系$(r_{\text{A}}-r_{\text{H}})/r_{\text{H}}\ll1$在大$D\gg1$制度。因此，我们的研究结果表明，至少在某些物理情况下，霍金辐射谱起源于非常…
We show that atoms falling from outside through a cavity into a black hole (BH) emit acceleration radiation which to a distant observer looks much like Hawking BH radiation. In particular, we find the entropy of the acceleration radiation via a simple laser-like analysis. We call this entropy Horizon Brightened Acceleration Radiation (HBAR) entropy to distinguish it from the BH entropy of Bekenstein and Hawking.
We examine Hawking radiation for a (2+1)-dimensional spinning black hole and study the interesting possibility of tunneling through the event horizon which acts as a classically forbidden barrier. Our finding shows it to be much lower than its nonrotating counterpart. We further explore the associated thermodynamics in terms of Hawking temperature and give estimates of black hole parameters like the surface gravity and entropy.
Hawking radiation of Dirac particles via tunnelling from rotating black holes in de Sitter spaces
黑洞视界的霍金辐射可以看作是一个量子隧穿过程，费米子通过隧穿可以成功地恢复霍金温度。本文考虑自旋为1/2的隧穿粒子（即Dirac粒子），进一步改进了Kerner和Man的费米子隧穿方法，研究了de Sitter空间中旋转黑洞，特别是Kerr de Sitter黑洞和Kerr-Newman de Sitter黑洞的隧穿霍金辐射.结果表明，利用Dirac粒子隧穿可以很好地描述事件视界和宇宙视界的Hawking温度。
