共查询到20条相似文献,搜索用时 46 毫秒
1.
按纠缠熵方法,计算了Gibbons-Maeda(G-M)dilaton黑洞视界外部与黑洞内量子态纠缠的一薄层内量子场的统计熵,得到了G-M dilaton黑洞的Bekenstein-Hawking熵.用广义不确定原理对量子态密度进行修正,克服了brick-wall模型中视界附近态密度的发散困难,该薄层可以紧贴在事件视界上.对brick-wall外部量子场中与黑洞内自由度有关联的自由度统计熵进行了计算,并把结果与brick-wall内量子场的熵进行比较分析,显示两结果具有与视界面积成正比的一致性,但后者能更
关键词:
纠缠熵
黑洞
广义不确定原理
截断 相似文献
2.
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 相似文献
3.
<正>By using the entanglement entropy method,this paper calculates the statistical entropy of the Bose and Fermi fields in thin films,and derives the Bekenstein-Hawking entropy and its correction term on the background of a rotating and charged black string.Here,the quantum field is entangled with quantum states in the black string and thin film to the event horizon from outside the rotating and charged black string.Taking into account the effect of the generalized uncertainty principle on quantum state density,it removes the difficulty of the divergence of state density near the event horizon in the brick-wall model.These calculations and discussions imply that high density quantum states near the event horizon of a black string are strongly correlated with the quantum states in a black string and that black string entropy is a quantum effect.The ultraviolet cut-off in the brick-wall model is not reasonable.The generalized uncertainty principle should be considered in the high energy quantum field near the event horizon.From the viewpoint of quantum statistical mechanics,the correction value of Bekenstein-Hawking entropy is obtained.This allows the fundamental recognition of the correction value of black string entropy at nonspherical coordinates. 相似文献
4.
Taking into account the effect of the generalized uncertainty principle on the generalized black hole entropy and tacking the thin film brick-wall model, we calculate the entropy of the quantum scalar field in generalized static black hole. The Bekenstein–Hawking entropies of all well-known static black holes are obtained. The entropy of 2-D membrane just at the event horizon of static black hole is also calculated, and the result of the black hole entropy proportional to the event horizon area can be obtained more easily and generally. This discussion shows that black hole entropy is just identified with the entropy of the quantum field on the event horizon. The difference from the original brick-wall model is that the present result is convergent without any cutoff and the little mass approximation is removed. With residue theorem, the integral difficulty in the calculation of black hole entropy is overcome. 相似文献
5.
Using the thin film brick-wall model,taking into account the effect of the generalized uncertainty principle on the equation of the density of the states, we calculate the free energy and entropy of schwarzschild black hole due to scalar field, we obtain the entropy proportional to the event horizon area without cutoff. This implies that quantum theory of gravity can remove the divergence of the state density on the event horizon and avoid the cutoff in the original brick-wall model, these results also mean that the thin film brick-wall model is universal.
PACS: 0420;9760L. 相似文献
6.
7.
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
8.
Quantum Entropy of Black Hole with Internal Global Monopole 总被引:2,自引:0,他引:2
Using the generalized uncertainty relation, the new equation of state
density is obtained, and then the entropy of black hole with an internal
global monopole is discussed. The divergence that appears in black hole
entropy calculation through original brick-wall model is overcome. The
result of the direct proportion between black hole entropy and its event
horizon area is drawn and given. The result shows that the black hole
entropy must be the entropy of quantum state near the event horizon. 相似文献
9.
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. 相似文献
10.
用砖墙模型的方法,讨论了无源引力场对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(M,η) 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.
关键词:
砖墙模型
量子修正
黑洞熵 相似文献
11.
Using the membrane model which is developed from the brick-wall model, we calculated the bosonic and fermionic entropy of 6-d Horowitz-Strominger black holes. The result shows the quantum entropy of such black holes is still proportional to the area of the event horizon only if the cut-off is properly chosen. As for the extreme black holes,the entropy approaches zero. 相似文献
12.
First quantum correction to entropy of Vaidya-Bonner black holes due to arbitrary spin fields
下载免费PDF全文
![点击此处可从《中国物理》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Using the improved brick-wall model, we have calculated the first quantum correction to the entropy of non-static black holes, Vaidya-Bonner black holes, due to the gravitational, electro-magnetic and neutrino fields. The result shows that both bosonic entropy and fermionic entropy are exactly proportional to the area of the event horizon. Thus, the entropy-area law still holds in such a non-static case. 相似文献
13.
利用brick-wall模型研究了引力场对Vaidya-Bonner-de Sitter黑洞熵的量子修正.当黑洞事 件视界不随超前时间变化时,结果与Reissner-Nordstrm-de Sitter黑洞的量子熵完全相 同. 相似文献
14.
15.
Molin Liu Junwang Lu Yonglei Jia Jianbo Lu 《International Journal of Theoretical Physics》2011,50(6):1978-1989
In this paper we investigate quantum statistical entropy for the Kehagias-Sfetsos black hole in IR modified Hořava-Lifshitz
gravity by using t’ Hooft’s brick-wall method and generalized uncertainty principle method. By carefully calculating, we obtain
the brick-wall entropy S
BWM
=A/4 and the generalized uncertainty principle entropy S
GUP
=A/96πγ. It is found if we view from quantum statistics, the brick-wall entropy and generalized uncertainty principle entropy may
possibly is proportional to the event horizon area. This type area entropy is also justified by Wang et al. (Phys. Rev. D
81:083006, 2010). The study of the quantum statistical entropy may shed light on the understand of Hořava-Lifshitz gravity. 相似文献
16.
ZHAORen WUYue-Qin ZHANGLi-Chun 《理论物理通讯》2003,40(6):745-748
In this paper, by using quantum statistical method, we obtain the partition function of Bose field and Fermi field on the background of the 5-dimensional rotating black hole. Then via the improved brick-wall method and membrane model, we calculate the entropy of Bose field and Fermi field of the black hole. And it is obtained that the entropy of the black hole is not only related to the area of the outer horizon but also is the function of inner horizon‘s area. In our results, there are not the left out term and the divergent logarithmic term in the original brick-wall method.The doubt that why the entropy of the scalar or Dirac field outside the event horizon is the entropy of the black hole in the original brick-wall method does not exist. The influence of spinning degeneracy of particles on entropy of the black hole is also given. It is shown that the entropy determined by the areas of the inner and outer horizons will approach zero,when the radiation temperature of the black hole approaches absolute zero. It satisfies Nernst theorem. The entropy can be taken as the Planck absolute entropy. We provide a way to study higher dimensional black hole. 相似文献
17.
In this paper, by using quantum statistical method, we obtain the partition function of Bose field and Fermi field on the background of the 5-dimensional rotating black hole. Then via the improved brick-wall method and membrane model, we calculate the entropy of Bose field and Fermi field of the black hole. And it is obtained that the entropy of the black hole is not only related to the area of the outer horizon but also is the function of inner horizon‘s area. In our results, there are not the left out term and the divergent logarithmic term in the original brick-wall method.The doubt that why the entropy of the scalar or Dirac field outside the event horizon is the entropy of the black hole in the original brick-wall method does not exist. The influence of spinning degeneracy of particles on entropy of the black hole is also given. It is shown that the entropy determined by the areas of the inner and outer horizons will approach zero,when the radiation temperature of the black hole approaches absolute zero. It satisfies Nernst theorem. The entropy can be taken as the Planck absolute entropy. We provide a way to study higher dimensional black hole. 相似文献
18.
19.
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. 相似文献