Genuine multipartite entanglement as the indicator of quantum phase transition in spin systems

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• 作者：Jia-dong Shi ; Dong Wang ; Liu Ye
• 关键词：Genuine multipartite entanglement ; Quantum phase transitions ; Quantum renormalization group
• 刊名：Quantum Information Processing
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：15
• 期：11
• 页码：4629-4640
• 全文大小：639 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Mathematics
  Engineering, general
  Computer Science, general
  Characterization and Evaluation Materials
  
• 出版者：Springer Netherlands
• ISSN：1573-1332
• 卷排序：15

文摘

In this paper, the genuine multipartite entanglement (GME) and quantum criticality property of spin systems with staggered Dzyaloshinskii–Moriya (DM) interaction are investigated by exploiting quantum renormalization group method. The results show that the GME can indicate quantum phase transitions at critical points after several iterations of the renormalization. Moreover, the DM interaction effectively restores the spoiled GME via creation of quantum fluctuations, while it also changes the critical points. At last, the nonanalytic and scaling behaviors of GME are analyzed in detail.