用反常观点讨论Kerr-de Sitter黑洞在拖曳坐标系下的霍金辐射(英文)

在拖曳坐标系中,从反常的角度讨论了Kerr-de Sitter黑洞的霍金辐射.为了描述可观测的物理现象,我们忽略事件视界处的入射模和宇宙视界处的出射模来建立有效理论.结果表明,用来恢复事件视界和宇宙视界处的规范流和能动张量流精确地等于霍金辐射流.

Kerr-de Sitter黑洞任意自旋粒子的隧穿辐射及其熵修正

运用超越半经典近似理论研究了Kerr-deSitter黑洞事件视界处的任意自旋粒子的隧穿辐射,并得到了修正的Hawking温度和粒子隧穿率.利用修正的Hawking温度和迹反常理论,进一步得到了此黑洞的修正熵,结果表明,超越半经典近似理论可适用于各种自旋粒子的隧穿辐射.

Kerr-anti-de Sitter黑洞在一种新tortoise坐标变换下的辐射特征

运用Hamilton-Jacobi方程,得到了Kerr-anti-de Sitter黑洞在新tortoise坐标变换下产生非热辐射时粒的频率,并与在广义tortoise坐标变换下的值进行了比较.结果表明,在两种情况下的值是相同的.最后,通过表面引力的方法得到了Kerr-anti-de Sitter黑洞产生热辐射时事件视界处的霍金温度.

Quantum radiation of non-stationary Kerr-Newman-de Sitter black hole

By introducing a new tortoise coordinate transformation, we investigate the quantum thermal and non-thermal radiations of a non-stationary Kerr-Newman-de Sitter black hole. The accurate location and radiate temperature of the event horizon as well as the maximum energy of the non-thermal radiation are derived. It is shown that the radiate temperature and the maximum energy are related to not only the evaporation rate, but also the shape of the event horizon, moreover the maximum energy depends on the electromagnetic potential. Finally, we use the results to reduce the non-stationary Kerr-Newman black hole, the non-stationary Kerr black hole, the stationary Kerr-Newman-de Sitter black hole, and the static Schwarzshild black hole.

Hawking radiation of stationary and non-stationary Kerr–de Sitter black holes

Hawking radiation of the stationary Kerr–de Sitter black hole is investigated using the relativistic Hamilton–Jacobi method. Meanwhile, extending this work to a non-stationary black hole using Dirac equations and generalized tortoise coordinate transformation, we derived the locations, the temperature of the thermal radiation as well as the maximum energy of the non-thermal radiation. It is found that the surface gravity and the Hawking temperature depend on both time and different angles. An extra coupling effect is obtained in the thermal radiation spectrum of Dirac particles which is absent from thermal radiation of scalar particles. Further, the chemical potential derived from the thermal radiation spectrum of scalar particle has been found to be equal to the highest energy of the negative energy state of the scalar particle in the non-thermal radiation for the Kerr–de Sitter black hole. It is also shown that for stationary black hole space time, these two different methods give the same Hawking radiation temperature.

Hawking radiation from Kerr-Newman de Sitter black hole via anomalies

In this paper, Hawking radiation from the Kerr Newman de Sitter black hole is studied via gauge anomaly and gravitational anomaly. The obtained results of Hawking radiation from the event horizon and the cosmological horizon accord with those by other methods.

Motion of a Test Particle in the Kerr-Newman De/Anti De Sitter Space-Time

In this paper we obtain the geodesic equations of motion of a test particle (charged particle and photon) in the Kerr-Newman de/anti de Sitter black hole by using the Hamilton-Jacobi equation. We determine the positions of the inner, outer and cosmological horizons of the black hole. In terms of the effective potentials, the trajectory of the test particle within the inner horizon is studied. It appears that there are stable circular orbits of a charged particle and photon within the inner horizon and that the combined effect of the charge and rotation of the Kerr-Newman de/anti de Sitter black hole and the coupling between the charge of the test particle and the electromagnetic field of the black hole may account for this.

Kerr-Newman-de Sitter黑洞的统计熵

避开求解波动方程的困难,利用量子统计的方法,直接计算Kerr Newman deSitter黑洞背景下玻色场和费米场的配分函数.然后利用砖墙膜模型计算和讨论黑洞背景下的玻色场和费米场的熵.

Kerr-Newman-de Sitter黑洞辐射谱和熵修正

本文延拓Damour-Ruffini方法,研究Kerr-Newman-de Sitter黑洞的Hawking辐射.在保持时空中总能量,总角动量和总电荷守恒的条件下,考虑辐射粒子对时空的反作用与黑洞事件视界和宇宙视界的相互关联后,得到了黑洞辐射谱.此辐射不再是严格的纯热谱与黑洞事件视界和宇宙视界对应Bekenstein-Hawking熵变有关.研究发现其结果仍然符合幺正性原理.同时给出了黑洞Bekenstein-Hawking熵的修正项.使人们对黑洞热辐射的研究有了进一步的认识.

克尔-纽曼-反德西特黑洞的有效热力学性质

首先分析Reissner-Nordstrm-反deSitter黑洞的有效左系统和右系统的热力学性质,然后分析更一般的克尔-纽曼-反德西特(KN-AdS)黑洞的情况,计算其相应的左系统和右系统的有效热力学量.在极限情况下,KN-AdS黑洞的有效热力学右系统满足能斯特定理,但有效左系统是一个有限温度系统.

广义Tortoise坐标变换与动态Kerr-Newman-de sitter黑洞的热辐射

根据广义乌龟坐标变换法(GTCT),对动态Kerr-Newman-de sitter黑洞的热辐射机制进行了研究.首先,利用在弯曲时空中描述自旋为0,质量为m的标量粒子的动力学方程(Klein-Gordon方程),再通过2种不同广义Tortoise坐标变换,最终得到了动态Kerr-Newman-de sitter黑洞在这2种不同情况下的热辐射谱,以及各自在事件视界处的霍金温度.通过对比研究发现,在2种不同Tortoise坐标变换下得出的热辐射谱,其形式是相同的,但是其值却是有所差异的.其根本原因在于所用的坐标变换不同导致了值存在一定的差别.同时,还分析了新广义Tortoise坐标在量纲上的合理性等问题.

The research on the quantum tunneling characteristics and the radiation spectrum of the stationary axisymmetric black hole

At the event horizon and the cosmological horizon of the stationary axisymmetric Kerr-Newman black hole in the de Sitter space-time background, the tunneling rate of the charged particles is relevant with Bekenstein-Hawking entropy and the real radiation spectrum is not strictly pure thermal, but consistent with the underlying unitary theory in quantum mechanics. This is a feasible interpretation for the paradox of the black hole information loss. Taking the self-gravitation action, energy conservation, angular momentum conservation and charge conservation into account, the derived radiation spectrum is a correct amendment to the Hawking pure thermal spectrum.

Quantum tunnelling of higher-dimensional Kerr-anti-de Sitter black holes beyond semi-classical approximation

Based on the theory of Klein-Gordon scalar field particles, the Hawking radiation of a higher- dimensional Kerr-anti-de Sitter black hole with one rotational parameter is investigated using the beyond semi-classical approximation method. The corrections of quantum tunnelling probability, Hawking temperature and Bekenstein-Hawking entropy are also included.