%0 Journal Article
%T AN INTEGRAL EXPRESSION OF EXACT SOLUTION FOR HARMONIC OSCILLATOR WITH TIME-VARYING FREQUENCY<br>
%A Li Li-xiang
%A Guo Guang-can
%A <br>
%J 中国物理 B
%D 1998
%I 
%X 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.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=2B847B1AE5226743D045444DADD4A91B&yid=8CAA3A429E3EA654&vid=DF92D298D3FF1E6E&iid=F3090AE9B60B7ED1&sid=0EE24608F5763811&eid=507521DBC725630F&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0