Density matrix Loschmidt echo and quantum phase transitions

	Density matrix Loschmidt echo and quantum phase transitions
	Li, YC (Li, Yan-Chao) ; Li, SS (Li, Shu-Shen)
刊名	physical review a
	2007
卷号	76 期号:3 页码:art.no.032117
关键词	STATISTICAL-MECHANICS
ISSN号	issn: 1050-2947
通讯作者	li, yc, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china.
中文摘要	we introduce the concept of the loschmidt echo (le) to the space of the reduced density matrix of spin and fermionic systems to study the density matrix les (dmles) of the one-dimensional extended hubbard model and the transverse field ising model. our results show that the dmles are remarkably influenced by the criticality of the system, and the method is a convenient way to study quantum phase transitions.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-29
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/9246]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Li, YC ,Li, SS . Density matrix Loschmidt echo and quantum phase transitions[J]. physical review a,2007,76(3):art.no.032117.
APA	Li, YC ,&Li, SS .(2007).Density matrix Loschmidt echo and quantum phase transitions.physical review a,76(3),art.no.032117.
MLA	Li, YC ,et al."Density matrix Loschmidt echo and quantum phase transitions".physical review a 76.3(2007):art.no.032117.