直线加速动态黑洞Dirac场的熵

采用薄层模型brickwall方法,计算出了直线加速动态黑洞视界面上Dirac场的熵以及Rindler视界面上Dirac场的熵密度,通过适当选择时间依赖的截断因子ε和薄层厚度δ,仍可得出熵与面积成正比的结论 关键词： 熵 加速动态黑洞 薄层模型 Dirac场 Dirac方程     

动态广义球对称含荷黑洞Dirac场的熵

利用改进后的薄膜brick-wall模型，计算了动态广义球对称含荷黑洞Dirac场的熵.按薄层模型的观点，在视界附近薄场上的熵就是黑洞的熵.计算结果表明所得到的黑洞熵与其视界面积成正比. 关键词： 黑洞 薄膜brick-wall模型 熵 Dirac场     

环面黑洞背景下量子场的熵

利用薄层（改进的brick-wall模型），通过分别求解标量场方程和Dirac场方程，计算了环面黑洞事件视界附近的标量场和Dirac场的量子统计熵.按薄层模型的观点，在视界面附近薄层上的量子场的熵就是黑洞的熵.结果表明，黑洞熵正比于事件视界的面积，遵循Beken-stein-Hawking面积熵公式. 关键词： 熵 环面黑洞 薄层模型 量子场     

球对称动态黑洞Dirac场的统计熵

利用改进的brick-wall模型，计算最一般球对称动态黑洞Dirac场的统计熵.结果表明，任一时刻黑洞熵都与黑洞事件视界面积成正比.特别是给出了动比例系数的计算公式，通过计算动比例系数，可直接得出各种球对称动态黑洞Dirac场的统计熵. 关键词： 事件视界 黑洞熵 Dirac场 动比例系数     

静态球对称黑洞Dirac场的统计熵

利用改进的brickwall模型,给出了一类静态球对称黑洞Dirac场的熵,结果表明,在取相同的截断因子时,Dirac场的熵均为标量场的熵的72倍 关键词： 黑洞 统计熵 brickwall模型 Dirac场     

广义不确定关系与整体单极黑洞Dirac场的熵

将广义不确定关系引入新的态密度方程，采用WKB近似方法，对含整体单极黑洞Dirac场的熵进行了直接计算，所得黑洞熵与它的视界面积成正比，以此揭示了黑洞熵是其视界面处量子态的熵.与brick-wall模型方法不同，该结果不需要取任何截断.同时表明，用此方法不仅可以计算黑洞标量场的熵，而且可以计算Dirac场的熵.     

Schwarzschild黑洞背景下Dirac场的熵

利用brick-wall方法计算了Schwarzschild黑洞背景下Dirac场的自由能和熵,得出了Dirac场的熵与黑洞视界面积成正比的结论,并进一步指出了Schwarzschild黑洞背景下Dirac场的熵为相应Klein-Gordon场的熵的7/2倍- 关键词：     

无截断薄膜模型与Dirac场的黑洞熵

计算黑洞熵的砖墙模型被改进为薄膜模型后其物理思想更直接而明了,且突出了事件视界作为静态或稳态黑洞特征面的重要性.但为避免发散,薄膜模型同样需要引入紫外截断因子.截断因子的引入非常人为,至今没有给以合理的解释.有文献将广义不确定关系引入黑洞熵的计算而不需要任何截断便可避免发散.本文以静态球对称黑洞Dirac场的熵的计算为例,阐述了无截断薄膜模型及其与有截断薄膜模型的本质区别. 关键词： 黑洞熵 无截断薄膜模型 广义不确定关系 Dirac场     

变加速直线运动黑洞的温度和Dirac场的熵

采用Tortoise坐标变换,约化视界面附近Dirac场方程,得到Kinnersley黑洞的Hawking温度.用薄膜brick-wall模型,计算Kinnersley黑洞的熵,得到通过选择适当的截断因子和薄层,在视界面附近薄层上的熵就是黑洞的熵,结果表明黑洞熵与视界面积成正比.     

Anti-de Sitter时空内柱黑洞的量子熵

利用brick-wall方法计算了Anti-de Sitter时空内起源于Dirac场的柱黑洞的量子熵.结果表明，忽略远离围绕系统的真空的贡献时，量子熵包含了线性发散项和对数发散项，整个表达式的形式与标量场的不一样.无论整个对数项还是与自旋联系的子对数项都总是正的. 关键词： brick-wall方法 量子熵 柱黑洞 Dirac场     

The Generalized Uncertainty Relation and The Entropy of Non-stationary and Slowly Changing Reissner-Nordstr?m Black Hole

Applying the generalized uncertainty relation to the thin film brick-wall model, the entropy of Dirac Field in Non-stationary and Slowly Changing Reissner-Nordstr?m Black Hole is obtained. The result shows that the entropy is still proportional to the horizon area of the black hole, and black hole entropy is just identical to the entropy of the quantum state near the event horizon, in addition, the divergence of state density without any cut-off parameter is avoided during black hole entropy calculation.     

Entropy of Dirac Field in Non-stationary and Slowly Changing Reissner-Nordstrom Black Hole

Using the thin film brick-wall model and WKB approximation, the entropy of the Dirac field in the non-stationary and slowly changing Reissner-Nordstrom (R-N) black hole is calculated. The result shows that the entropy of the R-N black hole is still proportional to its surface area if we choose proper cut-off.     

Fermion entropy of non-uniformly rectilinearly accelerating black hole with electric and magnetic charges

Using the thin film brick-wall model, we calculate the fermion entropy on event horizon and the surface density of the entropy on the Rindler Horizon to a rectilinearly accelerating non-stationary black hole with electric and magnetic charges. The conclusion that black hole entropy is proportional to its area can still be applied by regulating the cut-off factor ?$?$ and the film's thickness δ$\delta$, which are time dependent.     

Entropies of a Toroidal Black Hole Due to Scalar and Dirac Fields

Using the thin film brick-wall model, the entropies of a toroidal black hole due to scalar and Dirac fields are investigated. The entropy due to the scalar field is one fourth of the horizon area, and that due to the Dirac field is seven eighth of the area. These results are similar to that in black holes with horizon topology S ². The cutoff in toroidal black hole is chosen as the same as one in black holes with horizon topology S ², which seems to mean that the thin film brick-wall model is universal.     

LETTER: The Fermionic Entropy in Garfinkle-Horne Dilaton Black Hole Background

The expression of Fermionic entropy is derived in Garfinkle-Horne dilaton black hole background, by using 't Hooft's brick wall model and Newman-Penrose's spinor analysis approach.     

Area Entropy and Quantized Mass of Black Holes from Information Theory

In this paper, we present a derivation of the black hole area entropy with the relationship between entropy and information. The curved space of a black hole allows objects to be imaged in the same way as camera lenses. The maximal information that a black hole can gain is limited by both the Compton wavelength of the object and the diameter of the black hole. When an object falls into a black hole, its information disappears due to the no-hair theorem, and the entropy of the black hole increases correspondingly. The area entropy of a black hole can thus be obtained, which indicates that the Bekenstein–Hawking entropy is information entropy rather than thermodynamic entropy. The quantum corrections of black hole entropy are also obtained according to the limit of Compton wavelength of the captured particles, which makes the mass of a black hole naturally quantized. Our work provides an information-theoretic perspective for understanding the nature of black hole entropy.