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| 1 | Nernst Theorem and Statistical Entropy of 5-Dimensional Rotating Black Hole显示文摘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. | ZHAORen WUYue-Qin ZHANGLi-Chun | 2003 | Communications in Theoretical Physics2003，40，6X： | 2 |
| 2 | Tectonic Characteristics and Emplacement Mechanism of Dayishan Granite in Hunan Province, China显示文摘Dayishan granite, a significant metallogenic-rock body located in Shaoyang-Chenxian tectonomagmatic belt of Hunan Province, was controlled by 'Dayishan-type' fault pattern. Based on the study of tectonic setting and geological features of the grantie, it is concluded that the tectonic system controlling magmatic emplacement is a shear folded-fauted zone which resulted from NW-trending convergent strike-slip faulting. The close relationship between the temporal-spatial distribution, emplacement mechanism of Dayishan granite and the strike-slip faulting is detailed. | Li Xianfu(Wuhan Institute of Chemical Technology, Wuhan 430073)Li Jianwei Fu Zhaoren Li Zijin(Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074) | 1999 | Journal of Earth Science1999，18，4： | 1 |
| 3 | Entropy of Reissner—Nordstrom—De Sitter Black Hole in Nonthermal Equilibrium显示文摘By making use of the method of quantum statistics, we directly derive the partition function of bosonic and fermionic fields in Reissner-Nordstrom-De Sitter black hole and obtain the integral expression of black hole's entropy and the entropy to which the cosmic horizon surface corresponds. It avoids the difficulty in solving the wave equation of various particles. Then via the improved brick-wall method, i.e. the membrane model, we calculate black hole's entropy and cosmic entropy and find out that if we let the integral upper limit and lower limit both tend to the horizon, the entropy of black hole is proportional to the area of horizon and the entropy to which cosmic horizon surface corresponds is proportional to the area of cosmic horizon. In our result, the stripped term and the divergent logarithmic term in the original brick-wall method no longer exist. In the whole process, the physical idea is clear and the calculation is simple.We offer a new simple and direct way for calculating the entropy of different complicated black holes. | ZHAORen ZHANGJun-Fang 等 | 2002 | Communications in Theoretical Physics2002，37，1： | 1 |
| 4 | Entropy of N—Dimensional Spherically Symmetric Charged Black Hole显示文摘By using the method of quantum statistics, we derive directly the partition functions of bosonic andfermionic fields in the N-dimensional spherically symmetric charged black hole space-time. The statistical entropy ofblack hole is obtained by an improved brick-wall method. When we choose proper parameters in our results, we canobtain that the entropy of black hole is proportional to the area of horizon. In our result, there do not exist neglectedterm and divergent logarithmic term given in the original brick-wall method. We avoid the difficulty in solving the waveequation of scalar and Dirac fields. We offer a simple and direct way of studying entropy of the higher-dimensional black hole. | ZHAORen ZHANGLi-Chun | 2003 | Communications in Theoretical Physics2003，39，4： | 0 |
| 5 | Overexpression and Inactivation of PI6 Gene in Colorectal Carcinoma显示文摘 | ChenYu-ying WangZhi-wei ZhaoRen WangHao | 2000 | 胃肠病学2000，5，B08： | 0 |
| 6 | Structural Analysis of Jianglang Metamorphic Core Complex in Western Margin of yangtze Crston,Sichuan Province显示文摘There is a belt of metamorphic core complexes in the western margin of the Yangtze craton . The geological setting of the belt is similar to that of the Cordilleran metamorphic core complexes . A typical one in this belt is the Jianglang metamorphic core complex , which has a configuration consisting of three layers :a core complex consisting of Mesoproterozoic schist sequence , a ductile middle slab consisting of Paleozoic meta-sedimentary-basalt characterized by the development of 'folding layer' and an upper cover consisting of Xikang Group which has suffered both buckling and flattening . A detachment fault developed along the contact boundary between the cover and basement causes the omission of Upper Sinian and Cambrian at the base of cover . A lot of normal ductile shear zones developed in the cover causes the thinning of it . All the features show that the early extension results in the thinning of crust , but the formation of the dome and exposure of basement rocks may be the results of | Song Honglin Fu Zhaoren Yan DanpingDepartment of Geology and Mineral Resources , China University of Geosciences , Beijing 100083 | 1995 | Journal of Earth Science1995，14，2： | 0 |
| 7 | Horowitz-Strominger Black Hole Entropy Without Brick Wall显示文摘A Horowitz-Strominger black hole is discussed through a new equation of state density motivated by the gener-alized uncertainty relation in quantum gravity. There is no burst in the last stage of emission from a Horowitz-Strominger black hole. When the new equation of state density is used to investigate the entropy of bosonic fieldand fermionic field outside the horizon of a static Horowitz-Strominger black hole, the divergence that appearsin the brick-wall model is removed without any cutoff. The entropy proportional to the horizon area is derivedfrom the contribution in the vicinity of the horizon. | ZHANGLi-Chun ZHAORen LINHai | 2004 | Chinese Physics Letters2004，21，6： | 0 |
| 8 | Statistical Entropy of Horowitz—Strominger Black Hole显示文摘The partition functions of bosonic and fermionic fields in Horowitz Strominger black hole are deriveddirectly by quantum statistical method. Then via the improved brick-wall method (membrane model), the statisticalentropy of black hole is obtained. If a proper parameter is chosen in our result, it is found out that the entropy isproportional to the area of horizon. The stripped term and the divergent logarithmic term in the original brick-wallmethod no longer exist. The difficulty in solving the wave equations of scalar and Dirac fields is avoided. A new neatway of calculating the entropy of various complicated black holes is offered. | ZHAORen ZHANGJun-Fang 等 | 2002 | Communications in Theoretical Physics2002，37，5： | 0 |
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