摘要
讨论了外场驱动含时谐振子系统的三种解法的异同 ,发现利用相干态平均方法与量子不变量理论所得结果一致 ,而利用海森伯运动方程所求结果与上述两种结果相差一个相位因子 .
Three methods of solving the external driven oscillator system are discussed. The first using operator equation in the Heisenberg picture,the second using the coherent state expectation values to search for the time evolution operator and the third by quantum invariant theory.The two later methods are equivalent and the first method cannot determine the quantum phase factor.
出处
《大学物理》
2000年第10期12-14,19,共4页
College Physics
关键词
含时谐振子系统
量子相位
时间演化算符
time dependent oscillator system
quantum phases
time evolution operator
