Renormalization of Tripartite Entanglement in Spin Systems with Dzyaloshinskii–Moriya Interaction
Meng Qin** , Li Wang, Bili Wang, Xiao Wang, Zhong Bai, Yanbiao Li
Department of General Education, Army Engineering University of PLA, Nanjing 211101
Abstract ：Quantum entanglement represents a fundamental feature of quantum many-body systems. We combine tripartite entanglement with quantum renormalization group theory to study the quantum critical phenomena. The Ising model and the Heisenberg $XXZ$ model in the presence of the Dzyaloshinskii–Moriya interaction are adopted as the research objects. We identify that the tripartite entanglement can signal the critical point. The derivative of tripartite entanglement shows singularity as the spin chain size increases. Furthermore, the intuitive scaling behavior of the system selected is studied and the result allows us to precisely quantify the correlation exponent by utilizing the power law.
收稿日期: 2018-05-17
出版日期: 2018-09-15
:
03.65.Ud
(Entanglement and quantum nonlocality)
03.67.-a
(Quantum information)
03.67.Mn
(Entanglement measures, witnesses, and other characterizations)
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2018, Vol. 35 
