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Search Results: 1 - 10 of 280987 matches for " 李固强 "
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Statistical Entropy of Dirac Field in Schwarzschild-anti-de Sitter Space-time
Schwarzschild-anti-de Sitter时空中Dirac场的统计熵

Li Guqiang,

数学物理学报(A辑) , 2007,
Abstract: By using brick-wall method, the statistical entropy of Dirac field in Schwarzschild-anti-de Sitter spacetime is calculated and the effect of the spins of the Dirac particles on the entropy is investigated, ft is shown that if the author ignores the usual contribution from the vacuum surrounding the system, then the statistical entropy consists of a quadratically divergent term which is proportional to the horizon area of the black hole and two logarithmically divergent terms, the structure of the whole expression is different from that of the black hole entropy. The logarithmically divergent term may be positive, zero, or negative for different values of |A|r2 h.
Quantum corrections to the entropy of the Barriola-Vilenkin black hole due to sp in fields
自旋场对Barriola-vilenkin黑洞熵的量子修正

Li Gu-Qiang,

物理学报 , 2003,
Abstract: The quantum corrections to the entropy of the Barriola-Vilenkin black hole due to the massless gravitational field are calculated by using the brick-wall model.It is shown that the quantum corrections consist of two parts:One is a quadratic divergent term at the event horizon and is proportional to the surface area of the event horizon.The other is two logarithmically divergent terms which not only depend on the characteristics of the black hole but also on the spin of the field.The whole expression does not take the form of the scalar field.
Quantum entropy of cylindrical black hole in Anti-de Sitter space-time
Anti-de Sitter时空内柱黑洞的量子熵

Li Gu-Qiang,

物理学报 , 2006,
Abstract: By using the brick-wall model, the quantum entropy of a cylindrical black hole in Anti-de Sitter space-time arising from the massless Dirac field is discussed. It is shown that the quantum entropy has both linear and logarithmical divergences if the usual contribution from the vacuum surrounding the system is ignored, and the whole expression does not take the form of the scalar one. Both the whole logarithmic term and the subleading logarithmic term which relates to the spins of the Dirac particles are always positive.
Statistical entropy of Kerr-Newman-de Sitter black hole
Kerr-Newman-de Sitter黑洞的统计熵

Li Gu-Qiang,

物理学报 , 2005,
Abstract: The partition functions of bosonic and fermionic field in Kerr-Newman-de Sitter black hole are derived directly by using the method of quantum statistics. Th en the entropy of the Kerr-Newman-de Sitter black hole is calculated by using the improved brick-wall method with the membrane model.
Statistical entropy of Barriola-Vilenkin black hole
Barriola-Vilenkin黑洞的统计熵

Li Gu-Qiang,

物理学报 , 2004,
Abstract: The partition functions of bosonic and fermionic field in Barriola_Vilenkin black hole are directly derived by using the method of quantum statistics. Then the entropy of the Barriola_Vilenkin black hole is calculated by using the improved brick_wall method in the frame of membrane model.
Divergence structure of the statistical entropy of the Dirac field in a plane symmetry black hole geometry
Li Gu-Qiang,

中国物理 B , 2005,
Abstract: The divergences at all levels for the statistical entropy of a plane symmetry black hole arising from the massless Dirac field are considered using the brick-wall model. It is shown that if we ignore the usual contribution from the vacuum surrounding the system, then the statistical entropy consists of two parts: one is the linearly divergent term which has the geometric character, the other consists of two logarithmically divergent terms which are not proportional to the surface area of the horizon. The entropy of the Dirac field on extremal plane symmetry spacetime background has higher divergence than usual.
Quantum Corrects to the Entropy of the Barriola Vilenkin Black Hole Due to Spin Fields
自旋场对Barriola-Vilenkin黑洞熵的量子修正

LI Gu-Qiang,LI Zhong-Heng,
,黎忠恒

数学物理学报(A辑) , 2003,
Abstract: The quantum corrections to the entropy of the Barriola-Vilenkin black hole due to the gravitation electromagnetic and neutrino fields are calculated by using the brick-wall model. It is shown that the quantum corrects consist in two parts: One is aquadratic divergent term at event horizon and is proportional to the surface area of the event horizon. The other is two logarithmically divergent terms which not only depend on the characteristics of the black hole but also on the spin of fields. The whole expression does not take the form of the scalar field.
东北老工业基地衰退机制与结构转换研究

地理科学 , 1996,
Abstract: 分析“东北现象”及世界主要老工业基地发展衰退特征,运用产业结构及经济增长理论,探讨了我国东北老工业基地和世界主要老工业基地发展衰退的制约因素,归纳、总结了老工业基地发展的衰退机制.在分析、借鉴国外老工业基地改造成功经验的基础上,提出了我国东北老工业基地改造与振兴的目标、途径和措施.
纳米CaCO3对砼耐干湿循环腐蚀性能的影响
,高波
重庆交通大学学报(自然科学版) , 2007,
Abstract: :?以掺15%粉煤灰的砼为基准,研究了纳米CaCO,(NC)砼耐于湿腐蚀循环的性能.试验结果表明:与基准砼相比,在70次和110次循环后,Nc掺量为1%时砼的相对耐干湿循环系数分别提高l1%和13%,但过高的Nc掺量可能对砼的耐久性有副作用;同时对Nc砼性能的机理进行了分析.
某高层建筑转换层大梁混凝土蜂窝的治理

工业建筑 , 2003, DOI: 10.13204/j.gyjz200307024
Abstract: 高层建筑受力转换层大梁是重要的承重构件,施工时一般非常重视,但是成都市某建筑的转换层大梁却出现了严重的蜂窝现象,对此,分析了事故发生的原因,并介绍了对该工程病害采取的治理措施。
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