计算物理 ›› 2008, Vol. 25 ›› Issue (2): 179-185.

• 研究论文 • 上一篇    下一篇

求解耦合SchrÖdinger方程组的数值逼近算法

王廷春, 张鲁明, 陈芳启   

  1. 南京航空航天大学 理学院, 江苏 南京 210016
  • 收稿日期:2006-11-20 修回日期:2007-03-21 出版日期:2008-03-25 发布日期:2008-03-25
  • 作者简介:王廷春(1979-),male,Qingdao,Shandong,PhD,computational Physics.

Numerical Approximation for a Coupled Schrodinger System

WANG Tingchun, ZHANG Luming, CHEN Fangqi   

  1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2006-11-20 Revised:2007-03-21 Online:2008-03-25 Published:2008-03-25

摘要: 对耦合Schrödinger方程组提出一个非耦合的线性化差分格式并对其进行分析.证明格式保持原方程组的守恒律,在先验估计的基础上证明格式依L2模的绝对稳定性和无条件二阶收敛性.对孤波碰撞的各种现象进行模拟.

关键词: 耦合Schrö, dinger方程组, 线性格式, 非耦合格式, 守恒律, 收敛性

Abstract: A linear difference scheme which is not coupled for a coupled nonlinear Schrodinger system is proposed. It is shown that the scheme reserves conservation of the original system. It is demonstrated with a discrete energy method that the scheme is unconditionally stable and convergent by second-order L2 in norm on basis of some priori estimates. Collision of two solitary waves is simulated.

Key words: coupled SchrÖdinger equations, linear scheme, uncoupled scheme, conservation, convergence

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