Abstract Using Feynman's method of disentangling operators, an exact expression of evolution operator of harmonic oscillator with time-varying frequency is obtained. The parameters in this expression are related to the time-varying frequency directly. Some implications are further investigated, including general form of linear and quadratic invariants and evolution of Wigner function.
Received: 06 April 1998
Accepted manuscript online:
Fund: Project supported by the National Education Foundation of China for Ph.D.
Cite this article:
Li Li-xiang (李立祥), Guo Guang-can (郭光灿) AN INTEGRAL EXPRESSION OF EXACT SOLUTION FOR HARMONIC OSCILLATOR WITH TIME-VARYING FREQUENCY 1998 Acta Physica Sinica (Overseas Edition) 7 727
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