计算物理 ›› 2006, Vol. 23 ›› Issue (2): 189-192.

• 研究论文 • 上一篇    下一篇

自旋梯可积模型的研究

吴俊芳1,2, 张淳民1   

  1. 1. 西安交通大学理学院, 陕西 西安 710049;
    2. 西安工程科技学院理学院, 陕西 西安 710048
  • 收稿日期:2004-12-24 修回日期:2005-06-13 出版日期:2006-03-25 发布日期:2006-03-25
  • 作者简介:吴俊芳(1969-),女,陕西乾县,讲师,博士生,从事可积模型的研究,西安工程科技学院理学院物理系710048.
  • 基金资助:
    国家自然科学基金(40375010,60278019)资助项目

A Study on the Spin-ladder Model

WU Jun-fang1,2, ZHANG Chun-min1   

  1. 1. School of Science, Xi'an Jiaotong University, Xi'an 710049, China;
    2. College of Science, Xi'an University of Engineering Science & Technology, Xi'an 710048, China
  • Received:2004-12-24 Revised:2005-06-13 Online:2006-03-25 Published:2006-03-25

摘要: 通过对自旋梯可积模型的研究,求出该模型的能量本征值和两体散射矩阵.用可积模型中的坐标Bethe Ansatz方法,首先由薛定谔方程求得能量的本征方程.设定波函数的具体形式,求出本征能量,然后利用能量本征方程和波函数的连续性求出两体散射矩阵.求出单粒子、双粒子和N0个粒子的本征能量,同时求得粒子的两体散射矩阵.自旋梯可积模型的本征能量和两体散射矩阵可通过Bethe Ansatz的方法求得.

关键词: 可积模型, 坐标Bethe Ansatz, Schrö, dinger方程, 波函数, 能量本征值, 两体散射矩阵

Abstract: The eigenvalue and the two-particle scattering matrix are obtained in a spin-ladder model. They are solved with the coordinate Bethe Ansatz method in integrable. The eigenvalue equation is formed with the Schrödinger equation. Then the eigenvalue is solved as the wave function is given. Finally, the two-particle scattering matrix is calculated by the eigenvalue equation and the continuous condition of the wave function. The eigenvalues of one-particle, two-particle and N0-particle are solved, and the two-particle scattering matrix is obtained.

Key words: integrable model, coordinate Bethe Ansatz, Schrödinger equation, wave function, eigenvalue, two-particle scattering matrix

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