Geometric discord approach to quantum phase transition in the anisotropy XY spin model

被引：17

作者：

Cheng, W. W. ^{[1
,2
]}

Shan, C. J. ^{[2
]}

Sheng, Y. B. ^{[1
]}

Gong, L. Y. ^{[1
]}

Zhao, S. M. ^{[1
]}

Zheng, B. Y. ^{[1
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Inst Signal Proc & Transmiss, Nanjing 210093, Jiangsu, Peoples R China

[2] Hubei Normal Univ, Dept Phys, Huangshi 435002, Peoples R China

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2012年 / 44卷 / 7-8期

基金：

中国国家自然科学基金;

关键词：

STATISTICAL-MECHANICS; ENTANGLEMENT; ENVIRONMENTS;

D O I：

10.1016/j.physe.2012.02.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate the quantum critical behavior in the anisotropy XY spin chain by means of geometric discord (D-G). Near the critical point, the key ingredients of the quantum criticality (e.g, finite-size scaling behavior, universality principle and critical exponents) are investigated carefully, and the results show that the D-G is reliable to characterize the quantum critical behavior in such system. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：1320 / 1323

页数：4

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