计算物理 ›› 1998, Vol. 15 ›› Issue (2): 154-158.

• 论文 • 上一篇    下一篇

时间相关外场中量子系统时间演化的辛格式

石爱民1, 吴承埙2, 周忠源2, 丁培柱2   

  1. 1. 大连铁道学院, 大连 116028;
    2. 吉林大学, 长春 130023
  • 收稿日期:1997-03-12 修回日期:1997-05-04 出版日期:1998-03-25 发布日期:1998-03-25
  • 作者简介:石爱民,男,33,讲师,硕士,大连铁道学院物理教研室
  • 基金资助:
    国家自然科学基金和攀登计划项目LSEC资助课题

SYMPLECTIC SCHEMES FOR TIME-EVOLUTION OF THE QUANTUM SYSTEM IN TIME-DEPENDENT EXTERNAL FIELD

Shi Aimin1, Wu Chengxun2, Zhou Zhongyuan2, Ding Peizhu2   

  1. 1. Dalian Institute of Railway Technology, 116028;
    2. Jilin University, Changchun 130023
  • Received:1997-03-12 Revised:1997-05-04 Online:1998-03-25 Published:1998-03-25

摘要: 对显含时间的可分线性哈密顿系统构造了2阶模方守恒-辛格式和显式辛格式,并计算了1维有限宽无限深势阱中的电子与模拟激光场的相互作用,结果与理论分析一致。为数值研究时间相关外场中的量子系统,特别是强激光与原子相互作用提供了合理和有效的方法。

关键词: 显含时间哈密顿系统, 模方守恒-辛格式, 显式辛格式

Abstract: 2-order norm-preserving and symplectic scheme and 2-order explicit symplectic scheme for separable and linear Hamiltonian system including explicitly time are constituted and applied to compute interaction of the simulated laser field with an electron in the finite width and infinite depth potential well,the results are in good agreement with theoretical analysis.

Key words: Hamiltonian system including explicitly time, norm-preserving and symplectic scheme, explicity symplectic scheme

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