Global quantum discord and quantum phase transition in XY model

doi:10.1016/j.aop.2015.09.014

	Global quantum discord and quantum phase transition in XY model
	Liu, Si-Yuan 1,2; Zhang, Yu-Ran 2; Yang, Wen-Li 1; Fan, Heng 1,2,3
刊名	ANNALS OF PHYSICS
	2015-11-01
卷号	362 页码:805-813
关键词	Global quantum discord Quantum phase transition XY model
ISSN号	0003-4916
DOI	10.1016/j.aop.2015.09.014
英文摘要	We study the relationship between the behavior of global quantum correlations and quantum phase transitions in XY model. We find that the two kinds of phase transitions in the studied model can be characterized by the features of global quantum discord (GQD) and the corresponding quantum correlations. We demonstrate that the maximum of the sum of all the nearest neighbor bipartite GQDs is effective and accurate for signaling the Ising quantum phase transition, in contrast, the sudden change of GQD is very suitable for characterizing another phase transition in the XY model. This may shed lights on the study of properties of quantum correlations in different quantum phases. (C) 2015 Elsevier Inc. All rights reserved.
资助项目	"973" program[2010CB922904] ; NSFC[11075126] ; NSFC[11031005] ; NSFC[11175248] ; NWU graduate student innovation[YZZ12083]
WOS关键词	ENTANGLEMENT
WOS研究方向	Physics
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000363992900049
资助机构	"973" program ; NSFC ; NWU graduate student innovation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40935]
专题	中国科学院近代物理研究所
通讯作者	Zhang, Yu-Ran
作者单位	1.Northwestern Univ, Inst Modern Phys, Xian 710069, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 3.Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Si-Yuan,Zhang, Yu-Ran,Yang, Wen-Li,et al. Global quantum discord and quantum phase transition in XY model[J]. ANNALS OF PHYSICS,2015,362:805-813.
APA	Liu, Si-Yuan,Zhang, Yu-Ran,Yang, Wen-Li,&Fan, Heng.(2015).Global quantum discord and quantum phase transition in XY model.ANNALS OF PHYSICS,362,805-813.
MLA	Liu, Si-Yuan,et al."Global quantum discord and quantum phase transition in XY model".ANNALS OF PHYSICS 362(2015):805-813.