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Search Results: 1 - 10 of 52979 matches for " 黎忠恒 "
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Λ≠0时高维类Vaidya时空的事件视界方程及其热效应

物理学报 , 1995,
Abstract: 讨论了事件视界存在的条件,发现黑洞质量与宇宙因子之间存在一种制约关系,这种制约关系不但与时空维数有关,而且与黑洞蒸发的快慢有关。并给出了Klein-Gordon方程在黑洞视界附近的渐近解,得到了Hawking辐射温度和热谱公式。
黑洞附近修正Stefan-Boltzmann定律
张甲,
数学物理学报(A辑) , 2009,
Abstract: 该文在一般球对称静态黑洞背景下,用WKB近似法得到黑洞附近修正的Stefan-Boltzmann定律. 发现在黑洞事件视界附近,由于场自旋的存在,结果中除了类似于平直时空的主导项外, 多了一个和局域温度二次方成正比的附加项.该项的出现暗示黑洞的辐射可能不是精确热的.
BOTH THE ENTROPY CHANGE AND THE TEMPERATURE OF BLACK HOLES ARE THE COMPENSATE EFFECT UNDER THE TIME-SCALE TRANSFORMATION
黑洞的温度和熵变化是时间尺度变换的补偿效应

ZHAO ZHENG,LI ZHONG-HENG,
赵峥
,

物理学报 , 1996,
Abstract: The compensate effect under the time-scale transformation for the Schwarzschild black hole and Vaidya black hole are studied. The gauge potential is the contraction of the affine connection. Both the Hawking temperature and the change of entropy of black holes can be regarded as the pure-gauge potentials of the compensate field.
THE GENERALIZED TORTOISE COORDINATE-TRANSFORMATION AND HAWKING PROCESSES
广义Tortoise坐标变换与Hawking过程

LI ZHONG-HENG,ZHAO ZHENG,
,赵峥

物理学报 , 1997,
Abstract: By discussing on the dynamical equations of sorts of particles in the non-stationary Rindler and the Vaidya space-time,it is shown that after introducing new coordinates into a time-dependent metric,the method to define the tortoise coordinate transformation in a stationary space-time can be generalized to a non-stationary case.The character of the obtained tortoise transformation is that the temperature function is obviously dependent on time.It is also shown that the Hawking processes are independent of the source terms in the dynamical equations.Particularly,we find a picture where particle-scattering must be twice in the Hawking radiation described by the general time t such as in the non-stationary Rindler case.
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,
李固强
,

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.
QUANTUM ERGOSPHERE EFFECT OF SPHERICALLY SYMMETRIC NON-STATIC BLACK HOLE
球对称动态黑洞的量子能层效应

LI ZHONG-HENG,MI LI-QIN,
,米丽琴

物理学报 , 1999,
Abstract: By means of the Newman-Penrose formalism,the gravitational,electromagnetic, scalar and Dirac fields in spherically symmetric non-static space-times are discussed.It is shown that the quantum ergosphere can influence the radiative mechanism of a non-static black hole.The character of the effect is that the radiative mechanism is obviously dependent on the spin state,which differs from the classical effects due to the Kerr ergosphere and the electromagnetic potential.
Thermodynamical quantities around\\[1.8mm] a RNAdS black hole
Thermodynamical quantities around a RNAdS black hole

Mi Li-Qin,Li Zhong-Heng,
米丽琴
,

中国物理 B , 2006,
Abstract: The entropy density, energy density, pressure and equation of state around the RNAdS black hole are calculated in the WKB approximation on the Teukolsky-type master equation. The appearance of spin-dependent terms is demonstrated. The existence of these terms shows that the black hole radiation is not exactly thermal radiation and the black hole entropy is not strictly proportional to the area of the event horizon.
低碳钢在lng电站烟气介质下的应力腐蚀原因分析
,吕一仕,刘肖,陈玉辉,,
热力发电 , 2014,
Abstract: 某液化天然气电站余热锅炉尾部受热面发生多次腐蚀泄漏。通过裂纹形貌观察、腐蚀产物分析、腐蚀性元素测量和管壁温度有限元计算等表明,裂纹具有典型应力腐蚀(scc)形貌特征,腐蚀类型为沿晶scc。导致scc的原因是,机组调峰运行启停过程中的某些时段给水或烟气温度较低,使管外壁温度低于烟气露点从而导致烟气结露,形成scc液态环境。scc腐蚀的主导组分是co2水溶液。
桂西南山区的开发与建设

资源科学 , 1990,
Abstract: 本文讨论的桂西南山区包括南宁地区的横县、宾阳、上林、马山、隆安、扶绥、崇左、宁明、大新、天等、龙州、凭祥市等12个市、县和南宁市及其管辖的武鸣县和邕宁县。总面积39741km~2,1987年末总人口为746.63万。
广西石灰岩山区资源的合理利用

资源科学 , 1991,
Abstract: 广西石灰岩分布广,据地矿部岩溶地质研究所统计,石灰岩分布面积达8.95万km~2,占广西总面积37.8%,其中裸露石灰岩面积7.88万km~2,占广西总面积33.3%。石灰岩主要分布于湘桂铁路以西,包括河池地区、百色地区和南宁地区、柳州地区的西部以及桂林市区和阳朔县。其中以都安、河池、靖西等27个县(市)分布最集中,石灰岩面积占该县(市)面积30%以上。
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