【摘要】 本文利用三种方法计算了二能级体系的几何位相，并比较了计算结果．分析了该系统中ＡＡ的单个几何位相因子如何退化到Ｂｅｒｒｙ的二个几何相因子，并从结果中首次指出ＡＡ和Ｂｅｒｙ对几何位相的定义相差一个符号．更多还原

【Abstract】 The geometric phases of the two-level system are calculated through three didderent methods. From the results, the relation between AA phase and Berry’s phase is discussed. Especially it is pointed out why one AA phase can correspond to two Berry’s phases in this system. It is also found that the definition of geometric phase has a minus difference between AA definition and Berry’s definition.更多还原