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

doi:10.1088/1674-1056/20/2/020306

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.

Keywords: entanglement scaling spin chain Dzyaloshinskii–Moriya interaction

Received: 28 April 2010
Revised: 09 September 2010
Accepted manuscript online:

PACS:	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)
	75.10.Jm	(Quantized spin models, including quantum spin frustration)

Fund: Project supported by the Teaching and Research Foundation for the Outstanding Young Faculty of Southeast University.

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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) Scaling of entanglement entropy for spin chain with Dzyaloshinskii–Moriya interaction 2011 Chin. Phys. B 20 020306

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

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