摘要
利用规范变换来求解具有SU(2)代数结构的含时量子体系.首先严格求解了均匀旋转磁场中的1/2自旋粒子模型;其次求解了光场驱动的二能级体系,计算了高阶近似和非绝热效应,通过这种逐次逼近的方法可以实现绝热解向严格解的过渡.
A gauge transformation approach is used to resolve the Schrodinger equation for time-dependent quantum systems. We first make use of this method to solve the known model of spin 1/2 system in a rotation magnetic field. Second, we apply the approach to a laser-driven two-level system. We calculate the high-order approximation and nonadiabatic effects of the system, through this method of successive approximation we realize the transition of adiabatic solution to the strict solution.
出处
《大学物理》
北大核心
2014年第9期9-10,14,共3页
College Physics
关键词
规范变换
含时量子体系
二能级体系
gauge transformation
time-dependent quantum system
two-level system
