中国物理B ›› 1998, Vol. 7 ›› Issue (10): 727-731.doi: 10.1088/1004-423X/7/10/002
李立祥, 郭光灿
Li Li-xiang (李立祥), Guo Guang-can (郭光灿)
摘要: 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.
中图分类号: (Solutions of wave equations: bound states)