含时量子体系的规范变换求解及其应用  

Gauge transformation approach of time-dependent quantum system and application

作　　者：丁志刚[1] 李欣梦 

机构地区：[1]南京理工大学紫金学院,江苏南京210046

出　　处：《大学物理》2014年第9期9-10,14,共3页College Physics

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.

关 键 词：规范变换 含时量子体系 二能级体系 

分 类 号：O413.1[理学—理论物理]