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Absorption Cross Section of Einstein-Maxwell Dilation Axion Black Hole for Dirac Particles

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Communications in Theoretical physics 2007年第12期48卷 1051-1054页

作者： LIU Chang-Qing JING Ji-Liang Institute of physics and department of physics,Hunan normal university,Changsha 410081,china Institute of physics and department of physics Hunan Normal University Changsha 410081 China

The absorption cross section of the Einstein-Maxwell Dilaton Axion (EMDA) black hole for Dirac particlesis *** is shown that the absorption cross section decreases as both the v and the absolute value of the dilatonincrease,but it increases as the mass of the particle *** is also shown that the absorption cross section for themassless Dirac particles is 1/8 of the area of the horizon,which may be an universal property for minimally coupledmassless Dirac particles.

关键词： black hole absorption cross section Dirac particle

X-ray spectra induced by ^(12.)Xe^(q+) impacting the metal surface

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Science china(physics,Mechanics & Astronomy) 2008年第1期51卷 82-89页

作者： ZHANG XiaoAn 1,2.,XIAO GuoQing 1 ,YANG ZhiHu 1 ,CHEN XiMeng 3 ,ZHAO YongTao 1 , LI FuLi 4 ,WANG Li 1,2.,CUI Ying 3 ,ZHANG HongQiang 3 &ZHAN WenLong 1 1Institute of Modern physics,Chinese Academy of Sciences,Lanzhou 730000,china 2.2. of physics,Xianyang normal university,Xianyang 712.00,china 3{2. of Modern physics,Lanzhou university,Lanzhou 730000,china 4{2. of Applied physics,Xi’an Jiaotong university,Xi’an 710049,china Institute of Modern physics Chinese Academy of Sciences Lanzhou China department of physics Xianyang Normal University Xianyang China department of Modern physics Lanzhou University Lanzhou China department of Applied physics Xi’an Jiaotong University China

Using the slow highly charged ions 12. Xe q+ (q=2.,2.,2.;initial kinetic T0≤4.65 keV/a.u.)to impact Au surface,the Au atomic Mαcharacteristic X-ray spectrum is *** result shows that as long as the charge state of projectile is high enough,the heavy atomic characteristic X-ray can be effectively excited even though the incident beam is very weak(nA magnitude),and the X-ray yield per ion is in the order of 10-8and increases with the kinetic energy and potential energy of *** measuring the Au Mα-X-ray spectra,Au atomic N-level lifetime is estimated at about 1.33×10-18s based on Heisenberg uncertainty relation.

关键词： slow highly charged ions characteristic X-ray level lifetime

Entropy product measure for multipartite pure states

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Science china(physics,Mechanics & Astronomy) 2006年第5期49卷 606-615页

作者： CAO Wancang1,2. LIU Dan2. PAN Feng3 & LONG Guilu2.4 1. department of physics, Chifeng College, Chifeng 02.001,{2. 2. Key Laboratory for Quantum Information and Measurements, department of physics, Tsinghua university, Beijing 100084,{2. 3. department of physics, Liaoning normal university, Dalian 11602.,{2. 4. Key Laboratory for Atomic and Molecular Nano-Sciences, Tsinghua university, Beijing 100084,{2. Correspondence should be addressed to Long Guilu department of physics Chifeng College Chifeng China Key Laboratory for Quantum Information and Measurements Department of Physics Tsinghua University Beijing China department of physics Liaoning Normal University Dalian China Key Laboratory for Atomic and Molecular Nano-Sciences Tsinghua University Beijing China

An entanglement measure for multipartite pure states is formulated using the product of the von Neumann entropy of the reduced density matrices of the constituents. Based on this new measure, all possible ways of the maximal entanglement of the triqubit pure states are studied in detail and all types of the maximal entanglement have been compared with the result of ‘the average entropy’. The new measure can be used to calculate the degree of entanglement, and an improvement is given in the area near the zero entropy.

关键词： multipartite pure state von Neumann entropy entanglement measure

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矩形激光脉冲辐照下金属板材料温度分布研究

物理学报 2002年第3期51卷 554-558页

作者：郑瑞伦陈洪刘俊西南师范大学物理系重庆400715

从光子与声子相互作用机理出发 ,导出金属材料能量吸收速率 .利用格林函数和有限积分变换法求出有热源情况下的热传导方程的解析解 ,讨论了材料性质、板厚度对板内温度分布的影响 .结果表明 :矩形激光脉冲辐照下金属板材料温度分布具有... 详细信息

从光子与声子相互作用机理出发 ,导出金属材料能量吸收速率 .利用格林函数和有限积分变换法求出有热源情况下的热传导方程的解析解 ,讨论了材料性质、板厚度对板内温度分布的影响 .结果表明 :矩形激光脉冲辐照下金属板材料温度分布具有波动特征 ,板厚度和板材料性质对温度波动频率有重要影响 .

关键词：激光辐照能量吸收速率温度分布金属板材料矩形激光脉冲

Variable Separation Solution for(1+1)-Dimensional Nonlinear Models Related to Schrdinger Equation

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Communications in Theoretical physics 2004年第10期42卷 568-572页

作者： XU Chang-Zhi~(1,2. ZHANG Jie-Fang~11 Institute of Nonlinear physics,Zhejiang normal {2.,Jinhua 32.004,china2.department of physics and Mathematics,Jinhua Educational College,Jinhua 32.000,china Institute of Nonlinear physics Zhejiang Normal University Jinhua 321004 China department of physics and Mathematics Jinhua Educational College Jinhua 321000 China

A variable separation approach is proposed and successfully extended to the(1+1)-dimensional *** new exact solution of(1+1)-dimensional nonlinear models related to Schr(?)dinger equation by the entranceof three arbitrary functions is *** special types of soliton wave solutions such as multi-soliton wave solution,non-stable soliton solution,oscillating soliton solution,and periodic soliton solutions are discussed by selecting thearbitrary functions appropriately.

关键词： variable separation approach (1+1)-dimensional nonlinear models solution of soliton

Dynamic aggregation evolution of competitive societies of cooperative and noncooperative agents

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Chinese physics B 2013年第5期22卷 572-586页

作者：林振权叶高翔 department of physics Zhejiang University department of physics Wenzhou University department of physics Hangzhou Normal University

We propose an evolution model of cooperative agent and noncooperative agent aggregates to investigate the dynamic evolution behaviors of the system and the effects of the competing microscopic reactions on the dynamic evolution. In this model, each cooperative agent and noncooperative agent are endowed with integer values of cooperative spirits and nonco- operative spirits, respectively. The cooperative spirits of a cooperative agent aggregate and the noncooperative spirits of a noncooperative agent aggregate change via four competing microscopic reaction schemes： the win-win reaction between two cooperative agents, the lose-lose reaction between two noncooperative agents, the win-lose reaction between a coop- erative agent and a noncooperative agent （equivalent to the migration of spirits from cooperative agents to noncooperative agents）, and the cooperative agent catalyzed decline of noncooperative spirits. Based on the generalized Smoluchowski＇s rate equation approach, we investigate the dynamic evolution behaviors such as the total cooperative spirits of all coop- erative agents and the total noncooperative spirits of all noncooperative agents. The effects of the three main groups of competition on the dynamic evolution are revealed. These include：（i） the competition between the lose-lose reaction and the win-lose reaction, which gives rise to respectively the decrease and increase in the noncooperative agent spirits; （ii） the competition between the win-win reaction and the win-lose reaction, which gives rise to respectively the increase and decrease in the cooperative agent spirits; （iii） the competition between the win-lose reaction and the catalyzed-decline reaction, which gives rise to respectively the increase and decrease in the noncooperative agent spirits.

关键词： dynamic evolution in competitive societies cooperative and noncooperative agents win-win andlose-lose reaction win-lose reaction

A new definition of restricted Lie superalgebras

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Chinese Science Bulletin 2000年第4期45卷 316-321页

作者： WANG Ying & ZHANG Yongzheng1. department of Mathematics, Harbin Institute Technology, Harbin 150001, china 2. department of Mathematics, Northeast normal university, Changchun 13002., china department of Mathematics Harbin Institute Technology Harbin China department of Mathematics Northeast Normal University Changchun China

A new definition of restricted Lie superalgebras has been given; some important results on the representation theory of restricted Lie superalgebra have been obtained.

关键词： restricted Lie superalgebra p-mapping p-semilinear mapping α-representation.

(2.1)-Dimensional Electron Acoustic Solitary Waves in an Unmagnetized Collisionless Plasma with Vortex-Like Hot Electrons

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Communications in Theoretical physics 2007年第2期47卷 339-342页

作者： LIN Mai-Mai DUAN Wen-Shan department of physics,Northwest,{2. university,Lanzhou 730070,china department of physics Northwest Normal University Lanzhou 730070 China

In this paper,(2.1)-dimensional electron acoustic waves (EAW) in an unmagnetized collisionless plasmahave been studied by the linearized method and the reductive perturbation technique,*** dispersionrelation and a modified Kadomtsev Petviashvili (KP) equation have been obtained for the EAW in the plasma consideringa cold electron fluid and a vortex-like hot *** is found from some numerical results that the parameter β (theratio of the free hot electron temperature to the hot trapped electron temperature) effects on the amplitude and thewidth of the electron acoustic solitary waves (EASW).It can be indicated that the free hot electron temperature andthe hot trapped electron temperature have very important effect on the characters of the propagation for the EASW.

关键词： electron acoustic solitary wave vortex-like hot electrons reductive perturbation method

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CVD金刚石膜的结构分析

物理学报 2003年第6期52卷 1479-1483页

作者：刘存业刘畅西南师范大学物理学系重庆400715 拉特格斯大学物理与天文学系美国新泽西08854

利用x射线广角衍射和低角掠入射散射谱、正电子湮没谱、定性分析软件和Positronfit程序 ,研究了生长在Si( 10 0 )基底上的金刚石膜微结构 .研究发现 ,在样品邻近基底区域为纳米多晶结构 ,具有弱的 [111]织构 ;在邻近表面区域为微米多晶... 详细信息

利用x射线广角衍射和低角掠入射散射谱、正电子湮没谱、定性分析软件和Positronfit程序 ,研究了生长在Si( 10 0 )基底上的金刚石膜微结构 .研究发现 ,在样品邻近基底区域为纳米多晶结构 ,具有弱的 [111]织构 ;在邻近表面区域为微米多晶结构 ,具有强的 [2.2.0 ]织构 .金刚石膜样品有空位、空位团和空洞 3种缺陷 ,其中主要缺陷是大约

关键词： CVD 金刚石膜结构分析化学气相沉积正电子湮没谱 x射线广角衍射低角掠入射散微结构缺陷