Entanglement of the Heisenberg chain with the next-nearest-neighbor interaction

Shi-Jian Gu, Haibin Li, You-Quan Li, and Hai-Qing Lin
Phys. Rev. A 70, 052302 – Published 1 November 2004

Abstract

The features of the concurrences between the nearest-neighbors and that of the next-nearest-neighbors for the one-dimensional Heisenberg model with next-nearest-neighbor coupling J are studied as functions of temperature and J. The two concurrences exhibit a different dependence on J at the ground state, which could be interpreted from the point of view of the correlation functions. The threshold temperature at which the concurrence is zero and the temperature effect on the two concurrences for systems up to 12 sites are studied numerically.

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  • Received 1 March 2004

DOI:https://doi.org/10.1103/PhysRevA.70.052302

©2004 American Physical Society

Authors & Affiliations

Shi-Jian Gu1,2,*, Haibin Li2, You-Quan Li2, and Hai-Qing Lin1

  • 1Department of Physics, The Chinese University of Hong Kong, Hong Kong, China
  • 2Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027, China

  • *Electronic address: sjgu@phy.cuhk.edu.hkURL: http://www.phystar.net/

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Vol. 70, Iss. 5 — November 2004

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