中国物理B ›› 2011, Vol. 20 ›› Issue (2): 20306-020306.doi: 10.1088/1674-1056/20/2/020306

• GENERAL • 上一篇    下一篇

Scaling of entanglement entropy for spin chain with Dzyaloshinskii–Moriya interaction

杜龙, 侯净敏, 丁伽焱, 张文新, 田志, 陈婷婷   

  1. Department of Physics, Southeast University, Nanjing 211189, China
  • 收稿日期:2010-04-28 修回日期:2010-09-09 出版日期:2011-02-15 发布日期:2011-02-15
  • 基金资助:
    Project supported by the Teaching and Research Foundation for the Outstanding Young Faculty of Southeast University.

Scaling of entanglement entropy for spin chain with Dzyaloshinskii–Moriya interaction

Du Long(杜龙),Hou Jing-Min(侯净敏),Ding Jia-Yan(丁伽焱), Zhang Wen-Xin(张文新),Tian Zhi(田志),and Chen Ting-Ting(陈婷婷)   

  1. Department of Physics, Southeast University, Nanjing 211189, China
  • Received:2010-04-28 Revised:2010-09-09 Online:2011-02-15 Published:2011-02-15
  • Supported by:
    Project supported by the Teaching and Research Foundation for the Outstanding Young Faculty of Southeast University.

摘要: This paper investigates the entanglement in an XX-type spin chain with Dzyaloshinskii---Moriya interaction under an external magnetic field. The von Neumann entropy of entanglement between two blocks for the ground state of the system is evaluated. It analyses and discusses the scaling behaviour of the entanglement entropy.

Abstract: This paper investigates the entanglement in an XX-type spin chain with Dzyaloshinskii——Moriya interaction under an external magnetic field. The von Neumann entropy of entanglement between two blocks for the ground state of the system is evaluated. It analyses and discusses the scaling behaviour of the entanglement entropy.

Key words: entanglement, scaling, spin chain, Dzyaloshinskii–Moriya interaction

中图分类号:  (Entanglement measures, witnesses, and other characterizations)

  • 03.67.Mn
75.10.Jm (Quantized spin models, including quantum spin frustration)