量子电子学报

• 量子物理 • 上一篇    下一篇

含时受迫谐振子系统的求解

夏小建   

  1. 泉州师范学院物理与信息工程学院,福建 泉州 362000
  • 出版日期:2019-09-28 发布日期:2019-09-18
  • 作者简介:夏小建(1966-),福建人,硕士,副教授,主要从事量子物理方面的研究。

Solution of time-dependent driven harmonic oscillator system

XIA Xiaojian   

  1. College of Physics and Information Engineering, Quanzhou Normal University, Quanzhou 362000, China
  • Published:2019-09-28 Online:2019-09-18

摘要: 含时受迫谐振子系统与许多实际物理问题有密切联系。用SU(1,1)李代数的方法求解了具有SU(1,1)?h(3)含时受迫谐振子的量子系统。首先求解哈密顿量H ?_0 (t)的时间演化算符,再求解相互作用V ?(t)的时间演化算符,最后得到系统总的时间演化算符。用一个实例证实了此方法的正确性。

关键词: 受迫谐振子, SU(1, 1), 李代数, 黎卡提方程

Abstract: Time-dependent driven harmonic oscillator system is closely related to many practical physical problems. SU(1,1) Lie algebra is used to solve the problem of SU(1,1)?h(3) time-dependent forced harmonic oscillator system. Firstly,the time evolution operator of Hamilton H ?_0 (t) is solved,then the time evolution operator of V ?(t) in interaction representation is solved. Finally,the general time evolution operator of system is obtained. One example is given to demonstrate the correctness of the method.

Key words: driven harmonic oscillator , SU(1,1), Lie algebra, Riccati equation