黑洞的温度和熵变化是时间尺度变换的补偿效应

以史瓦西黑洞和Ｖａｉｄｙａ黑洞为例，研究了时间尺度变换的补偿效应．规范势就是仿射联络的缩并．黑洞的熵变化和Ｈａｗｋｉｎｇ温度都可看作补偿场的纯规范势 关键词：     

Brick Walls for Nonstationary Black Holes

The validity condition of the brick-wall model is analysed in nonstationary space-time.It is shown that the model holds only in thin regions,only by using tortoise coordinates near the event horizon of a slowly varying(quasistationary)black hole.The reason for the use of tortoise cooridnates is that the stationary state solutions of quantum field equations in other coordinates do not exist for any region in nonstationary space-time.Meanwhile,the quantum corrections to the entropy of the Vaidya-Bonner black hole due to the spin fields are calculated in terms of the brick-wall model.     

黑洞附近修正Stefan-Boltzmann定律

该文在一般球对称静态黑洞背景下,用WKB近似法得到黑洞附近修正的Stefan-Boltzmann定律. 发现在黑洞事件视界附近,由于场自旋的存在,结果中除了类似于平直时空的主导项外, 多了一个和局域温度二次方成正比的附加项.该项的出现暗示黑洞的辐射可能不是精确热的.     

Λ≠0时高维类Vaidya时空的事件视界方程及其热效应

讨论了事件视界存在的条件,发现黑洞质量与宇宙因子之间存在一种制约关系,这种制约关系不但与时空维数有关,而且与黑洞蒸发的快慢有关。并给出了Klein-Gordon方程在黑洞视界附近的渐近解,得到了Hawking辐射温度和热谱公式。 关键词：     

球对称动态黑洞的量子能层效应

用Newman-Penrose形式,研究了球对称动态时空中的引力、电磁、标量和Dirac场,表明量子能层会影响动态黑洞的辐射机制.与Kerr能层和电磁势产生的经典效应不同,这个效应的特征是辐射机制明显依赖于自旋态. 关键词：     

自旋场对Barriola-Vilenkin黑洞熵的量子修正

用砖墙模型的方法，讨论了无源电磁、中微子场对Barriola Vilenkin黑洞熵的量子修正。计算表明，量子修正应该包含两部分：其中一部分与视界面积成正比，在视界附近与紫外截断因子∈是平方反比发散的；另一部分是两个对数发散项，这部分除了与黑洞的本身特征性质有关以外，还与自旋场的自旋有关。结果与标量场引起的量子修正具有完全不同的形式。      

Effect of Spin on Thermodynamical Quantities around Reissner-Nordstroem Black Holes

Using the quantization procedure involving in the Boulware vacuum state and Killing time t, we evaluate the entropy density, energy density, pressure and equation of state around the Reissner-Nordstroem black hole by the Wentzel-Kramers-Brillouin approximation on the Teukolsky-type master equation. We find that, near the event horizon, there exist subleading order terms with spin dependence beyond the expected Minkowskian hightemperature contribution. In particular, the terms are important and cannot be neglected for near-extremal black hole cases. At large r, the Boulware state approaches the Minkowski vacuum and the theory agrees with that performed in Minkowski spacetime.     

正则相干态法计算二维体系的高阶项矩阵元

通过对匀强磁场中二维电子的讨论，表明用正则相干态计算二维体系和存在简并体系任意幂坐标算符矩阵元的技巧。