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国家重点基础研究发展计划(2003CB716302)

作品数:9 被引量:27H指数:2
相关作者:刘文彪牛振风刘成周张昌平周史薇更多>>
相关机构:北京师范大学滨州学院更多>>
发文基金:国家重点基础研究发展计划国家自然科学基金更多>>
相关领域:天文地球理学电子电信更多>>

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9 条 记 录,以下是 1-9
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Hawking radiation and thermodynamics of a Vaidya-Bonner black hole被引量:1
2010年
Using Parikh's tunneling method, the Hawking radiation on the apparent horizon of a Vaidya-Bonner black hole is calculated. When the back-reaction of particles is neglected, the thermal spectrum can be precisely obtained. Then, the black hole thermodynamics can be calculated successfully on the apparent horizon. When a relativistic perturbation is applied to the apparent horizon, a similar calculation can also lead to a purely thermal spectrum. The first law of thermodynamics can also be derived successfully at the new supersurface near the apparent horizon. When the event horizon is thought of as a deviation from the apparent horizon, the expressions of the characteristic position and temperature are consistent with the previous viewpoint which asserts that the thermodynamics should be based on the event horizon. It is concluded that the thermodynamics should be constructed exactly on the apparent horizon while the event horizon thermodynamics is just one of the perturbations near the apparent horizon.
Zhen-Feng NiuWen-Biao Liu
Kerr和Kerr-Newman黑洞中的一般性隧穿辐射
2008年
Hawking辐射可以看作是黑洞视界面附近的一个量子隧穿过程.当一个带有角动量L≠ωa的粒子穿过Kerr或Kerr-New-man黑洞的事件视界时,黑洞单位质量的角动量a将发生变化.通过计算这种一般情况下类光粒子的透过率,发现其结果仍然符合幺正性理论的要求.
高利刘文彪
关键词:HAWKING辐射黑洞
The relation between a black hole and a general black body system
2010年
Taking a black hole as a black body system, using general black body radiation theory, a Schwarzschild black hole and a Kerr-Newman black hole are investigated respectively. It is concluded that a black hole can be regarded as an ideal general black body system exactly for the changing process only. However, a stationary global black hole cannot be smoothly regarded as a general black body system. A black hole has some special characteristics which different from a general thermodynamics system. This conclusion means that a black hole should be inherently dynamical, at least when it is taken as a black body system.
周史薇刘博黄基利刘文彪
关键词:THERMODYNAMICS
非对易时空下Gibbons-Maeda dilaton黑洞和Garfinkle-Horowitz-Strominger dilaton黑洞的热力学性质被引量:2
2007年
以Gibbons-Maeda dilaton黑洞和Garfinkle-Horowitz-Strominger dilaton黑洞为例,研究空间的非对易性对黑洞热力学性质的影响.通过对比对易时空中Gibbons-Maeda dilaton黑洞和非对易时空中Garfinkle-Horowitz-Strominger dilaton黑洞的温度,得出如下结论:从对黑洞热力学性质产生影响这一角度来说,时空的非对易性和黑洞的荷(电荷或磁荷)有相似的作用.
周史薇刘文彪
General radiation via tunneling in Kerr and Kerr-Newman black holes被引量:2
2008年
Hawking radiation can be viewed as a process of quantum tunneling near the black hole horizon. When a particle with angular momentum L≠ω a tunnels across the event horizon of Kerr or Kerr-Newman black hole, the angular momentum per unit mass a should be changed. The emission rate of the massless particles under this general case is calculated, and the result is consistent with an underlying unitary theory.
GAO LiLIU WenBiao
关键词:RADIATIONUNITARYPAINLEVECOORDINATES
The Casimir effect of Reissner-NordstrSm black hole
2006年
The stress tensor of a massless scalar field satisfying a mixed boundary condition in a (1 + 1)-dimensional Reissner- Nordstrom black hole background is calculated by using Wald's axiom. We find that Dirichlet stress tensor and Neumann stress tensor can be deduced by changing the coefficients of the stress tensor calculated under a mixed boundary condition. The stress tensors satisfying Dirichlet and Neumann boundary conditions are discussed. In addition, we also find that the stress tensor in conformal flat spacetime background differs from that in flat spacetime only by a constant.
肖奎刘文彪
Schwarzschild-de Sitter时空的引力反常与霍金辐射
2008年
在Robinson和Wilczek工作的基础上,研究了Schwarzschild-de Sitter时空的引力反常.为了避免对时空整体对称性的破坏,必须消除引力反常,进而得到了黑洞两视界面(黑洞视界和宇宙视界)处都有霍金辐射.
刘博刘文彪
关键词:霍金辐射
新Tortoise坐标变换与任意加速带电动态黑洞熵被引量:20
2005年
采用一种新的Tortoise坐标变换 ,约化视界附近Klein_Gordon方程 ,得到了黑洞的Hawking温度 ;并用薄膜模型计算了黑洞熵 ,得到了熵与视界面积成正比的Bekenstein关系 .用这种Tortoise坐标变换 。
牛振风刘文彪
关键词:动态黑洞视界黑洞熵KLEIN-GORDON方程
二维静态时空中Dirac场的重正化能动张量和Casimir效应被引量:2
2007年
在一般渐近平直的二维静态黑洞时空中,利用重正化能动张量的一般性质,对位于两“平行板”间满足Dirichlet条件的无质量Dirac场的重正化能动张量的真空期待值进行了分析和计算,得到了一般表达式.利用该表达式可以给出各种具体渐近平直二维静态黑洞时空中的相应Casimir力.对于重正化能动张量及Casimir力与真空态定义(包括Boulware真空态、Hartle-Hawking真空态和Unrum真空态三种情况)、Hawking辐射和反常迹的关系分别进行了讨论,给出了相应的表达式和计算结果.
刘成周张昌平
关键词:CASIMIR效应黑洞真空态
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