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Chinese Journal of Chemistry 1997年第1期15卷 17-20页

作者： CAI, Zheng-Ting LI, Ci-Rant ZHANG, Rui-Qin DENG, Cong-Haoinstitute of theoretical Chemstry, Department of Chemistry, Department of physics Shandong university, Jinan, Shandong 250100, china institute of theoretical Chemistry Jinan Shandong 250100 China Department of Chemistry Shandong university Jinan Shandong 250100 China Department of physics Shandong university Jinan Shandong 250100 China

The Lewis acidity scale of boron trihalides BX3 (X=F, Cl, Br, I) and character of the boron-halogen bonds have been studied by means of DV-Xa approach. Present results show that the acid strength of boron trihalides increases in the order BF3333, in excellent agreement with experiments. Based on boron-halogen bonding character, the valence of boron atom in boron compounds can be considered as equal to five instead of three which seems to be more reasonable.

关键词： Lewis acidity scale boron trihalides valence of boron DV-Xα quantum chemical approach

Optimal 1 → M phase-covariant cloning in three dimensions

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Chinese physics B 2014年第7期23卷 269-273页

作者：张文海余龙宝曹卓良叶柳 Department of physics Huainan Normal University school of Electronic and information Engineering Hefei Normal University school of physics and Material Science Anhui University

In this paper, we derive the explicit transformations of the optimal 1→3, 4, 5 phase-covariant cloning in three dimensions, and then generalize them to the cases of 1 → M = 3n, 3n ＋ 1, 3n ＋ 2 （n ≥ 1 integer） cl... 详细信息

关键词： quantum cloning universal quantum cloning phase-covariant cloning

Entangled Fractional Fourier Transform for the Multipartite Entangled State Representation

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Communications in theoretical physics 2006年第6期45卷 1097-1101页

作者： QIAN Xiao-Qing SONG Tong-Qiang Department of physics,Ningbo university,Ningbo 315211,china Department of physics Ningbo University Ningbo 315211 China

Abstract We deduce entangled fractional Fourier transformation(EFFT)for the multipartite entangled state rep-resentation,which was newly constructed with two mutually conjugate n-mode entangled states of continuum variablesin n-mode Fock *** establish a formalism of EFFT for quantum mechanical wave functions,which provides us aconvenient way to derive some wave *** find that the eigenmode of EFFT is different from the usual *** also derive the EFFT of the n-mode squeezed state.

关键词： :entangled fractional Fourier transformation(EFFT) multipartite entangled state

A theoretical analysis of optical-to-THz conversion efficiency via optical rectification

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Science china(Technological Sciences) 2008年第12期51卷 2080-2088页

作者： LI DeHua1,QI XiaoDong2 & LIU ShengGang3 1 Terahertz institute of Shandong university of Science & Technology,Qingdao 266510,china 2 Changchun institute of Optics,Fine Mechanics and physics,Chinese Academy of Sciences,Changchun 130033,china 3 Terahertz research center,Physical Electronics College,university of Electronics Science,Chengdu 610054,china Terahertz institute of Shandong university of Science & Technology Qingdao China Changchun institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun China Terahertz research center Physical Electronics College University of Electronics Science Chengdu China

A theoretical analysis of an ultra-short pulse converted to Terahertz radiation via optical rectification in nonlinear optical crystal is presented here;several factors that affect optical-to-THz conversion efficiencies are discussed;pulse durations affect the conversion efficiency effectively:when crystal length is equal to the optimal crystal length lc,optical-to-THz conversion efficiency is the highest,but for the periodically-inverted electro-optic crystals,conversion efficiency is almost proportional to the crystal length when absorption can be *** account of the absorption of crystals,effective length of crystal is Leff=0.63/α,there is no apparent increase of conversion efficiency and the conversion efficiency approaches to a constant eventually when the crystal length is increased.

关键词： optical rectification periodically inverted effective length conversion efficiency

含时空关联噪声的非局域及各向异性Kardar-Parisi -Zhang方程的直接标度分析

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物理学报 2002年第5期51卷 994-998页

作者：唐刚马本堃中国矿业大学物理系徐州221008 北京师范大学物理系和理论物理研究所北京100875

将直接标度分析方法推广应用到含时间空间关联噪声的非局域及各向异性Kardar Parisi Zhang方程的动力学标度分析中 ,分别得到了方程在强耦合区和弱耦合区的标度指数值 .

关键词：时空关联噪声非局域各向异性直接标度分析 KPZ方程表面界面动力学粗化生长

Effect of Asymmetry in a Bistable System Subject to Multiplicative Colored Noise

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Communications in theoretical physics 2007年第12期48卷 1059-1062页

作者： ZHOU Yu-Rong~(1,2)GUO Feng~3 and PANG Xiao-Feng~1~1 school of Life Science and Technology,university of Electronic Science and Technology of china,Chengdu 610054,china~2 school of information and Electric Engineering,Panzhihua university,Panzhihua 617000,china~3 school of Automation Engineering,university of Electronic Science and Technology of china,Chengdu 610054,china school of Life Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China school of information and Electric Engineering Panzhihua University Panzhihua 617000 China school of Automation Engineering University of Electronic Science and Technology of China Chengdu 610054 China

By the method of the stochastic energetics,we investigate the stochastic resonance (SR) phenomenon of anoverdamped Brown particle in an asymmetric bistable potential,driven by external periodical signal and *** expressions have been obtained for the quasi-steady-state probability distribution *** is found thatthe input energy (IE) pumped into the system by the external driving shows an SR-like behavior as a function of thenoise strength,whereas the IE turns to be a monotonic function of the correlation time of the *** effect ofpotential asymmetry is also studied on SR and IE.

关键词： asymmetric bistable system stochastic resonance stochastic energetics

量子动边界广义含时谐振子之精确的指数-正弦型演化态

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物理学报 2001年第9期50卷 1654-1660页

作者：李伯臧李玲中国科学院物理研究所和凝聚态物理中心山西大学物理系和理论物理研究所太原030006

研究了被局限于区间 [0 ,L(t) ]中运动的动边界广义含时谐振子量子系统 ,其Hamiltonian为坐标与动量的非齐次含时二次型 .求出了具有“指数正弦型”演化态的充要条件以及相应的正交归一完备的精确演化态系列 .此结果不但几乎包含了已... 详细信息

研究了被局限于区间 [0 ,L(t) ]中运动的动边界广义含时谐振子量子系统 ,其Hamiltonian为坐标与动量的非齐次含时二次型 .求出了具有“指数正弦型”演化态的充要条件以及相应的正交归一完备的精确演化态系列 .此结果不但几乎包含了已有结果作为特例 ,还涵盖了相当广泛的范围 .此外 ,澄清了个别作者关于对时间的微商的一个误解 ,指出对时空坐标的微商均具有寻常的含义 .

关键词：动边界量子系统广义含时谐振子精确解量子力学微商动边界广义含时谐振子量子系统指数-正弦型演化态

Photoionization Cross Section and Resonance Structure of Mn+

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Communications in theoretical physics 2006年第5期45卷 911-913页

作者： LU Peng-Fei,~1 LIU Jin-Chao,~2 and YANG Xiang-Dong~2 ~1 school of Science, Beijing university of Posts and Telecommunication, Beijing 100876, china ~2 institute of Atomic and Molecular physics, Sichuan university, Chengdu 610065, china school of Science Beijing University of Posts and Telecommunication Beijing 100876 China institute of Atomic and Molecular physics Sichuan University Chengdu 610065 China

A photoionization cross section calculation of Mn;is performed in the formalism of many-body perturbation theory for photon energies ranging from 48 eV to 56 eV. We consider excitations from the 3p, 3d, and 4s subshells. The effects of the strong 3p→3d and 3p→4s transitions are included as resonant contributions to the total cross sections. Good agreement with experiment is found.

关键词： many-body perturbation theory effective single-particle potential generalized resonance method

Tunneling conductance in graphene ferromagnet/p wave superconductor junctions

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Science china(physics,Mechanics & Astronomy) 2012年第4期Mechanics & Astronomy) .卷 649-653页

作者： LI XiaoWei 1,2*,CHEN HuaBao 1 & LIU ShuJing 1 1 school of physics and Electronic Electrical Engineering,Huaiyin Normal university,Huaian 223300,china 2 State Key Laboratory of Functional Materials for Informatics,Shanghai institute of Microsystem and information Technology,Chinese Academy of Sciences,Shanghai 200050,china school of physics and Electronic Electrical Engineering Huaiyin Normal University Huaian China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China

Using the extended Blonder-Tinkham-Klapwijk formalism,we investigate the conductance spectra of graphene ferromagnet/p wave superconductor *** is found that the conductance spectra are affected by the p wave pairing *** ferromagnetic exchange energy in the ferromagnet can suppress Andreev retroreflection but enhance the specular Andreev reflection in graphene ferromagnet/p wave superconductor *** conductance decreases with increasing exchange energy Eh for EhEF.

关键词： graphene ferromagnet p wave superconductor tunneling conductance

Seasonal variation of global stratosphere-troposphere mass exchange

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Progress in Natural Science:Materials International 2007年第12期17卷 1466-1475页

作者： Guo Dong1,2, Lu Daren2 and Sun Zhaobo1(1. institute of Atmospheric Sciences, Nanjing university of information Science and Technology, Nanjing 210044, china 2. LAGEO, institute of Atmospheric physics, Chinese Academy of Sciences, Beijing 100029, china) institute of Atmospheric Sciences Nanjing University of Information Science and Technology Nanjing 210044 China LAGEO Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

By Wei formula in pressure coordinate, the stratosphere-troposphere mass exchange (STME) is diagnosed globally for 44 years from 1958 to 2001 using the European Center for Medium-Range Weather Forecasts (ECMWF) reanalysis datasets. Regions of mass flux into the stratosphere are found over Indonesia, bay of Bangladesh and the mid-west coast of South Africa. Compensating mass outflow from the stratosphere appears mainly over mid-latitudes near large-scale troughs. Upward and downward transport of mass at the middle and high latitudes accompany with each other. Mass flux into troposphere is stronger in autumn and winter than in spring and summer. Strong downward mass flux into the troposphere occurs in eastern Asia the whole year with nearly stable sites. Although the area of eastern Asia accounts for only 5.6% of that of the northern hemisphere (NH), its net mass exchange reaches 15.83% of that of the NH, which means that research on STME of eastern Asia is greatly important to that of the NH and even the global areas. Air across the tropopause enters more from stratosphere to troposphere than that from troposphere to stratosphere, which is possibly related with systematic bias of the assimilated datasets and with persistent rise of the tropopause height. Contributions of the mass exchange and the mass flux exchange in the NH and southern hemisphere (SH) on their latitudes increase from equator to pole, with larger contributions in the NH. Mass exchange and mass flux exchange per areas at high latitudes are larger than that at low latitudes, which means greater mass exchange efficiency at high latitudes.

关键词： stratosphere troposphere mass exchange seasonal variation.