TIME EVOLUTION AND SQUEEZED STATES OF A TIME-DEPEDENT OSCILLATOR SYSTEM
含时谐振子系统的时间演化及压缩态

In this paper are discussed the time evolution and squeezed states of a time-depedent oscillator system. We obtain closed formulas for the time evolution of quantum states and the evolution operator of the system by selecting proper Hermitian invariant operator. We derive the condition generating squeezed states and obtain that the drive part does not influence the squeezed states of the system.