检索结果-南通市图书馆

Generalized dromions of the (2+1)-dimensional nonlinear Schrdinger equations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 2001年第1期6卷 50-53页

作者： Jiefang ZHANG (institute of nonlinear physics, zhejiang normal university, jinhua 321004, china) institute of nonlinear physics Zhejiang Normal University Jinhua 321004 China

We derive the generalized dromions of the (2+1)-dimensional nonlinear Schrodinger equations besides the basic dromion solutions by suitably utilizing the arbitrary function in the bilinearized equations. The rich drom... 详细信息

关键词： dromion (2+1)-dimensional nonlinear Schrdinger equations

New multisoliton solutions of the(2+1)-dimensional dispersive long wave equations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 2001年第3期6卷 178-182页

作者： Jiefang ZHANG and Ping HAN institute of nonlinear physics, zhejiang normal university, jinhua 321004, china College of Engineering, zhejiang Ocean university, Zhoushan 316004, china institute of nonlinear physics Zhejiang Normal University Jinhua 321004 China College of Engineering Zhejiang Ocean University Zhoushan 316004 China

Using the extension homogeneous balance method, we have obtained a nonlinear transformation to simplify the (2+1)-dimensional dispersive long wave equations into a linear partial differential equation, and found some ... 详细信息

关键词： multisoliton (2+1)-dimensions dispersive long wave equations

New Exact and Explicit Solitary WaveSolutions to a Class of Coupled nonlinear Equations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 1998年第3期3卷 189-193页

作者： Xuejun XU and Jiefang ZHANG(institute of nonlinear physics and Dept. of physics. zhejiang normal Univ., jinhua321004, china) institute of nonlinear physics and Department of physics Zhejiang Normal University Jinhua 321004 China

New exact and explicit solitary wave solutions are obtained for the couplednonlinear equation by using a simple way of making the ansatz u(x, t) =Asechn ζ+A0with ζ = k(x+wt) +ζ0.

关键词： solitary wave solution ansatz coupled nonlinear equations

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

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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 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

nonlinear properties of fractal growth of thin films at low temperature

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 2001年第2期6卷 61-67页

作者： Fengmin WU, Jiefang ZHANG, Gen BIAN and Ziqin WU Research Center of Science, zhejiang university of Technology, Hangzhou 310014, china institute of nonlinear physics, zhejiang normal university, jinhua 321004, china Shao Yifu Hospital of zhejiang Provin Research Center of Science Zhejiang University of Technology Hangzhou 310014 China institute of nonlinear physics Zhejiang Normal University Jinhua 321004 China Shao Yifu Hospital of zhejiang Province Hangzhou 310005 China Department of Astronomy and Applied physics University of Science and Technology of China Hefei 230026 China

Fractal growth of thin films at low temperature (75-200 K) is simulated by kinetic Monte Carlo method, using realistic growth model-Ag on Pt(111) surface and physical parameters. It is shown that the fractal growth of thin films is nonlinear, i. e., the island size S(t) grows with time t as tk ) where the growth exponent k is slightly less than 1 because of the growth competition of islands and the competition between nucleation and growth of islands. The further results indicate that the branch width of islands b increases with increasing island size S as b -Sa, where a is approximately equal to 1/3 because of the geometrical structure of the triangular substrate.

关键词： fractal growth thin film Monte Carlo method

A simple method to construct soliton-like solution of the general KdV equation with external force

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 2000年第4期5卷 170-173页

作者： Jiefang ZHANG and Fengmin WU (institute of nonlinear Physica, zhejiang normal university, jinhua 321004, china e-mail: jfzhang＠*** Research Center of Engineering Science, zhejiang university of Technology, Hangzhou 310032, Chian) (Received institute of nonlinear physics Zhejiang Normal University Jinhua 321004 China Res. Center of Engineering Science Zhejiang University of Technology Hangzhou 310032 China

A simple and direct method is described to construct the soliton-like solution for the general KdV equation with external force. Crucial to the method is the assumption that the solution chosen is a special truncated ... 详细信息

关键词： the general KdV equation with external force soliton-like solution exact solution

Three-dimensional Bose Einstein condensate vortex solitons under optical lattice and harmonic confinements

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese physics B 2013年第3期22卷 184-191页

作者：王莹宗丰德李峰波 institute of nonlinear physics Zhejiang Normal University

We predict three-dimensional vortex solitons in a Bose-Einstein condensate under a complex potential,which is the combination of a two-dimensional parabolic trap along the transverse radial direction and a one-dimensional optical-lattice potential along the z axis *** vortex solitons are built in the form of a layer-chain structure made of several fundamental vortices along the optical-lattice *** has not been reported before in the three-dimensional Bose-Einstein *** using a combination of the energy density functional method with direct numerical simulation,we find three-dimensional vortex solitons with topological charges χ=1,χ=2,and χ=***,the macroscopic quantum tunneling and chirp phenomena of the vortex solitons are shown in the ***,the occurrence of macroscopic quantum tunneling provides the possibility for the experimental realization of quantum ***,we successfully manipulate the vortex solitons along the optical lattice *** stability limits for dragging the vortex solitons from an initial fixed position to a prescribed location are further pursued.

关键词： Bose-Einstein condensates Gross-Pitaevskii equation vortex soliton manipulation

维普期刊数据库

Generalized dromion solutions of a new higher dimensional soliton equation

在线全文

学校读者我要写书评

暂无评论

Communications in nonlinear Science and Numerical Simulation 2001年第2期6卷 97-101页

作者： Jiefang ZHANG and Gongdi XU Shanghai institute of Applied Mathematics and Mechanics, Shanghai 200072, china institute of nonlinear physics, zhejiang normal university, jinhua 321004, china College of Chemical Engineering, Qiqihar university, Qiqihar 161 Shanghai institute of Applied Mathematics and Mechanics Shanghai 200072 China institute of nonlinear physics Zhejiang Normal University Jinhua 321004 China College of Chemical Engineering Qiqihar University Qiqihar161000 China

We derive the generalized dromions of the new higher dimensional soliton equation by suitably utilizing the arbitrary function present in the bilinearized linear equations. The rich dromion structures for this system ... 详细信息

关键词： dromion soliton equation

Nonautonomous bright solitons and soliton collisions in a nonlinear medium with an external potential

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese physics B 2012年第5期21卷 145-152页

作者：李画眉葛龙何俊荣 Department of physics Zhejiang Normal University

We present exact bright multi-soliton solutions of a generalized nonautonomous nonlinear Schroinger equation with time-and space-dependent distributed coefficients and an external potential which describes a pulse propagating in nonlinear media when its transverse and longitudinal directions are nonuniformly *** solutions exist in certain constraint conditions on the coefficients depicting dispersion,nonlinearity,and gain（loss）.Various shapes of bright solitons and interesting interactions between two solitons are *** applications of interest to the field and stability of the solitons are discussed.

关键词： generalized nonautonomous nonlinear Schrodinger equation multi-soliton solution,Fourier-synthesized optical lattice potential flying bird potential

维普期刊数据库