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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. 相似文献
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针对Reissner Nordstrom de Sitter时空背景,利用经广义测不准关系改进的薄层brick wall方法计算了黑洞熵。结果表明,由这种方法得到的黑洞熵上限与它的外视界和宇宙视界面积之和成正比,和人们预期的结果相符。从中揭示了黑洞 熵与视界面积之间的内在联系,也进一步表明了黑洞熵是视界面上量子态的熵,是一种量子效应。由广义测不准关系的引入看到,brick wall方法与引力场量子化可能存在着一些内在的联系。 相似文献
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Non-equilibrium Landauer transport model for Hawking radiation from a Reissner—Nordstrom black hole 下载免费PDF全文
The recent work of Nation et al., in which the Hawking radiation energy and entropy flow from a black hole is considered to be produced in a one-dimensional Landauer transport process, is extended to the case of a Reissner- Nordstrom black hole. The energy flow contains not only the contribution of the thermal flux but also that of the particle flux. It is found that the charge can also be transported via the one-dimensional quantum tunnel. Because of the existence of the electrostatic potential, the entropy production rate is shown to be smaller than that of the Schwarzschild black hole. 相似文献
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刘文彪 《数学物理学报(A辑)》2009,29(1):32-37
研究了BTZ黑洞背景下带电、有质量粒子的辐射过程, 此时能量守恒和电荷守恒意味着引力反作用和电磁反作用. 从隧穿过程的观点来看, 辐射谱偏离了纯热谱, 但仍满足幺正理论, 并且有可能对信息佯谬给出解释. 通过计算, 可以得到与不带电、无质量粒子辐射相同的结论. 相似文献
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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. 相似文献