%0 Journal Article
%T Quantum chaos and the dynamic properties of single-particle coherence in Dicke model<br>Dicke模型的量子混沌和单粒子相干动力学特性
%A Song Li-Jun
%A Yan Dong
%A Gai Yong-Jie
%A Wang Yu-Bo
%A <br>宋立军
%A 严冬
%A 盖永杰
%A 王玉波
%J 物理学报
%D 2010
%I 
%X The Dicke model displays quantum chaotic dynamic properties in the without-rotating-wave approximation. We explore the dynamic properties of the single-particle coherence in Dicke model by using the first-order temporal correlation function and numerical simulation. The results reveal that the first-order temporal correlation function decays very rapidly when the initial coherent state is centered in chaotic regions, but rather slowly when the initial coherent state is centered in regular regions. This indicates that the single-particle coherence is highly sensitive to initial states, and the classical chaos suppresses quantum coherence. The mean single particle coherence during the evolution is studied, and a better quantum-classical correspondence is obtained. Finally, the dynamics of single-particle coherence in the whole phase space is investigated, which reveals the chaotic and regular structures of the phase space more clearly.
%K Dicke model
%K without-rotating-wave approximation
%K quantum chaos
%K single-particle coherence<br>Dicke模型
%K 非旋波近似
%K 量子混沌
%K 单粒子相干
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=00AA1581E36837139A6F767B876CA96C&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=B31275AF3241DB2D&sid=EC8A602D0661ED8F&eid=BE4FB15239288221&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=27