Berezinskii-Kosterlitz-Thouless transition uncovered by the fidelity susceptibility in the XXZ model

被引：33
|
作者：
Wang, Bo [1 ,2 ]
Feng, Mang [1 ]
Chen, Ze-Qian [1 ]
机构：
[1] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.81.064301
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the one-dimensional Heisenberg XXZ model involving the Dzyaloshinskii-Moriya (DM) interaction from the viewpoint of quantum information. By using the density-matrix-renormalization-group technique, we study the Berezinskii-Kosterlitz-Thouless (BKT) phase transition using the ground-state fidelity, the fidelity susceptibility, and the entanglement entropy. We argue that the BKT phase transition can be well characterized in our model, and the critical line induced by the DM interaction can also be detected.
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页数：4
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