大学物理 ›› 2014, Vol. 33 ›› Issue (9): 9-9.
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丁志刚 李欣梦
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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.
关键词: 规范变换, 含时量子体系, 二能级体系
Abstract: 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.
Key words: gauge transformation, time-dependent quantum system, two-level system
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丁志刚 李欣梦. 含时量子体系的规范变换求解及其应用[J]. 大学物理, 2014, 33(9): 9-9.
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https://dxwl.bnu.edu.cn/CN/Y2014/V33/I9/9
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