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Impact of LHC probes of SUSY and recent measurement of(g-2)_μon Z_(3)-NMSSM

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Science china(Physics,Mechanics & Astronomy) 2022年第9期65卷 52-64页

作者： Junjie Cao Fei Li Jingwei Lian Yusi Pan Di Zhang department of Physics Henan Normal UniversityXinxiang 453007China

It is well known that excessively heavy supersymmetric particles(sparticles)are disfavored to explain the(g−2)_(μ) anomaly,but some people overlook that moderately light sparticles are also disfavored by the LHC probes of *** take the Next-to-Minimal Supersymmetric Standard Model as an example to emphasize the latter *** is found that,if the theory is required to explain the anomaly at 2σlevel and meanwhile keep consistent with the LHC results,the following lower bounds may be set:tanβ&20,|M_(1)|&275 GeV,M_(2)&300 GeV,μ&460 GeV,m_(μL)&310 GeV,and m_(μR)&350 GeV,where M_(1)and M_(2)denote gaugino masses,μrepresents the Higgsino mass,and m_(μL)and m_(μR)are the mass of Smuons with L and R denot-ing their dominant chiral *** observation has significant impacts on dark matter(DM)physics,e.g.,the popular Z-and Higgs-funnel regions have been excluded,and the Bino-dominated neutralino DM has to co-annihilate with the Wino-dominated electroweakinos(in most cases)and/or Smuons(in few cases)to obtain the correct *** is also inferred that these conclusions keep valid for the Minimal Supersymmetric Standard Model since the underlying physics for the bounds are the same.

关键词： supersymmetric muon anomalous magnetic moment LHC

A delayed reaction–diffusion viral infection model with nonlinear incidences and cell-to-cell transmission

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International Journal of Biomathematics 2021年第8期14卷 305-342页

作者： Qing Ge Xia Wang Libin Rong School of mathematics and Statistics XinyangNormal UniversityXinyang 464000P.R.China department of mathematics University of FloridaGainesvilleFL 32611USA

In this paper,we propose a reaction–diffusion viral infection model with nonlinear incidences,cell-to-cell transmission,and a time *** impose the homogeneous Neumann boundary *** the case where the domain is bounded,we first study the *** we analyze the local stability of homogeneous steady *** establish a threshold dynamics which is completely characterized by the basic reproduction *** the case where the domain is the whole Euclidean space,we consider the existence of traveling wave solutions by using the cross-iteration method and Schauder’s fixed point ***,we study how the speed of spread in space affects the spread of cells and *** obtain the existence of the wave speed,which is dependent on the diffusion coefficient.

关键词： Reaction-diffusion equation cell-to-cell transmission absorption effect time delay traveling wave solutions

Influence of Coulomb force between two electrons on double ionization of He-like atoms

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Chinese Physics B 2022年第1期31卷 235-240页

作者： Peipei Liu Yongfang Li Jingtao Zhang department of Physics Shanghai Normal UniversityShanghai 200234China

In strong-field double ionization,two electrons are ionized by intense laser *** two electrons move in the laser field and the state is described by a Coulomb-Volkov state,where the repulsive Coulomb state describes the relative motion of the two electrons and the Volkov state describes the center-of-mass motion of the two electrons in the laser *** the frame of scattering theory,we derive a simple analytical formula of the double ionization of He-like *** effect of the Coulomb force between two electrons on the double ionization process is *** studies disclose that the Coulomb force enhances the ionization rate of high-energy electrons but suppresses the ionization rate of the lowest-energy electrons.

关键词： double ionization Coulomb force Coulomb-Volkov state scattering theory

Study on the Evolution of River Networks during Urbanization since the Development and Opening of Pudong New Area, Shanghai

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Chinese Journal of Population,Resources and Environment 2005年第2期3卷 49-54页

作者： Chen Dechao 1 & Chen Zhongyuan 21 Urban and Environment department, university of Science and Technology of Suzhou,Suzhou 215011, china2 department of Geography, east china normal university, Shanghai 200062, china Urban and Environment department University of Science and Technology of Suzhou Suzhou 215011 China department of Geography East China Normal University Shanghai 200062 China

Pudong New Area of Shanghai, as areform and opening front of china, holds the balancein economic development of Yangtze Delta and evenof china. After a large-scale infrastructure andfunction development in the past decade, it hasbecome "the miniature of modernization constructionin Shanghai" and "the symbol of reform and openingin china". But, due to the rapid urbanization andassociated environmental issues, rivers in the studiedarea remain seriously polluted and are alsodiminishing. Consequently this damages the featuresof the water village and investment setting in thePudong New Area. On the basis of analyzing the aerophotographs (1989, 1994 and 1999) and land usedata by Remote Sensing and Geographic InformationSystem, this paper illustrated that: 1) The river densityof the studied area has declined by 1/3 from 1989to 1999; 2) Since the development and opening oPudong, the river system has experienced twodeclining phases: rapid declining (1989-1994) andslow declining (1994-1999); 3) The fast urbanizationof land-use is a primary threat to the river systemwhich is particularly prominent within the Inner BelWay and in the developed zone of Pudong area.

关键词： Pudong New Area river networkevolution land use change remote sensing geographicinformation system

Analytic Characterization for Hilbert-Schmidt Operators on Fock Space

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Acta Mathematica Sinica,English Series 2005年第4期21卷 787-796页

作者： Cai Shi WANG Zhi Yuan HUANG Xiang Jun WANG School of mathematics and Information Science Northwest Normal University Lanzhou 730070 P. R. China department of mathematics Huazhong University of Science & Technology Wuhan 430074 P. R. China

In this paper we first introduce and investigate some special classes of nonlinear maps and get several useful results. Then, by using these results, we obtain analytic criteria for checking whether or not an operator defined only on the exponential vectors of a symmetric Fock space becomes a Hilbert-Schmidt operator on the whole space. Additionally, as an application, we also get an analytic criterion for Hilbert-Schmidt operators on a Gaussian probability space through the Wiener-Ito-Segal isomorphism.

关键词： Fock space Hilbert-Schmidt operator Frěchet entire map

Weighted composition operators between μ-Bloch spaces on the unit ball

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Science china mathematics 2005年第10期48卷 1349-1368页

作者： ZHANG Xuejun~1 & XIAO Jianbin~2 1. College of mathematics and Computer Science,Hunan normal university,Changsha 410006,china(email:xuejunttt@263. net) 2. The School of Science,Hangzhou Dianzi university,Hangzhou 310037,china College of mathematics and Computer Science Hunan Normal University Changsha China The School of Science Hangzhou Dianzi University Hangzhou China

In this paper,necessary and sufficient conditions are given for the weighted composition operator T_(ψ,ψ) to be bounded or compact from the space β_μ to β_ν (or β_(μ,0) to β_(ν,0) ) on the unit ball of C^***... 详细信息

关键词： μ-Bloch space, weighted composition operator, boundedness, compactness.

On Study of Solutions of Kac-van Moerbeke Lattice and Self-dual Network Equations

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Communications in Theoretical Physics 2006年第1期45卷 36-40页

作者： XIE Fu-Ding JI Min GONG Ling department of Computer Science Liaoning Normal University Dalian 116029 China Key Laboratory of mathematics Mechanization Academy of Mathematics and Systems Science the Chinese Academy of Sciences Beijing 100080 China

The closed form of solutions of Kac-van Moerbeke lattice and self-dual network equations are considered by proposing transformations based on Riccati equation, using symbolic computation. In contrast to the numerical computation of travelling wave solutions for differential difference equations, our method obtains exact solutions which have physical relevance.

关键词： Kac-van Moerbeke lattice self-dual network equation Riccati equation closed form solution

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 university,Jinhua 321004,china2 department of Physics and mathematics,Jinhua Educational College,Jinhua 321000,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

Lie Reduction and Conditional Symmetries of Some Variable Coefficient Nonlinear Wave Equations

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Communications in Theoretical Physics 2010年第1期53卷 1-5页

作者：黄定江周水庚梅建琴张鸿庆 School of Computer Science Fudan University Shanghai Key Lab of Intelligent Information Processing Fudan University department of mathematics East China University of Science and Technology department of Applied mathematics Dalian University of Technology

Lie symmetry reduction of some truly ＂variable coefficient＂ wave equations which are singled out from a class of （1 ＋ 1）-dimensional variable coefficient nonlinear wave equations with respect to one and two-dimensional algebras is carried out. Some classes of exact solutions of the investigated equations are found by means of both the reductions and some modern techniques such as additional equivalent transformations and hidden symmetries and so on. Conditional symmetries are also discussed.

关键词： symmetry reduction conditional symmetry exact solutions variable-coefficient nonlinear wave equations