Reduced fidelity, entanglement and quantum phase transition in the one-dimensional bond-alternating S=1 Heisenberg chain

被引：2
|
作者：
Jiang, J. J. [1 ]
Liu, Y. J. [2 ]
Tang, F. [3 ]
Yang, C. H. [4 ]
机构：
[1] Sanjiang Coll, Dept Phys, Nanjing 210012, Peoples R China
[2] Yangzhou Univ, Sch Phys Sci & Technol, Yangzhou 225002, Peoples R China
[3] Yangzhou Polytech Inst, Dept Elect & Informat Engn, Yangzhou 225002, Peoples R China
[4] Nanjing Univ Informat Sci & Technol, Fac Math & Phys, Nanjing 210044, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL B | 2011年 / 83卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Correlation Length; Entanglement Entropy; Critical Exponent; Haldane; Quantum Phase Transition;
D O I：
10.1140/epjb/e2011-20035-0
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
By using the method of density-matrix renormalization group, the reduced fidelity and entanglement in the one-dimensional bond-alternating S = 1 Heisenberg chain are investigated. The results demonstrate that the quantum phase transition from the Haldane phase to the dimer phase can be characterized by the reduced fidelity and the first derivation of the entanglement entropy. Through the finite-size scaling, the critical point and the critical exponent of the correlation length are obtained accurately.
引用
收藏
页码：1 / 5
页数：5
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