共查询到13条相似文献,搜索用时 62 毫秒
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采用薄层模型brick-wall方法,计算了一般球对称带电蒸发黑洞Dirac场的熵,通过适当选择时间依赖的截断因子,仍可得出黑洞熵与视界面积成正比的结论.
关键词:
熵
蒸发黑洞
薄层模型
Dirac场
Dirac方程 相似文献
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在一般加速带电带磁的动态黑洞中,化简Klein-Gordon场方程,利用乌龟坐标变换,得到在视界面附近的辐射温度.用薄膜brick-wall模型,选择适当的截断因子和薄膜厚度,得到在视界面附近薄膜上的熵,结果表明黑洞熵与视界面积成正比.
关键词:
黑洞
Hawking温度
薄膜brick-wall模型
熵 相似文献
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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 相似文献
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计算了广义球对称含荷黑洞视界上标量场的量子态数和自由能,得到了黑洞熵与视界面积成 正比的结论,表明黑洞熵就是其视界上的量子态的熵.考虑广义不确定原理对黑洞熵的影响 ,采用二维膜模型,克服了brick-wall模型中的发散困难,计算中无须任何截断,且brick- wall模型中的小质量近似也可以避免.对视界外二维膜上的量子场的熵做了级数展开讨论, 得到了一些值得探讨的结论.
关键词:
广义不确定原理
黑洞熵
视界
截断 相似文献
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By using the new equation of state density derived from the
generalized uncertainty relation, the number of the quantum states
near event horizon is obtained, with which then the information
entropy of static spherically symmetric black holes has been
discussed. It is found that the divergent integral of quantum states
near the event horizon can be naturally avoided if using the new
equation of state density without introducing the ultraviolet
cut-off. The information entropy of black holes can be obtained
precisely by the residue theorem, which is shown to be proportional
to the horizon area. The information entropy of black holes obtained
agrees with the Bechenstein--Hawking entropy when the suitable
cutoff factor is adopted. 相似文献
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Using the generalized uncertainty principle, we calculate the entropy of the charged dilaton-axion black hole for both asymptotically
flat and non-flat cases by counting degrees of freedom near the horizon. The divergence of density of states and free energy
appearing in the thin film brick-wall model is removed without any cutoff. The entropy proportional to the horizon area is
derived from the contribution of the vicinity of the horizon.
相似文献