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Properties of entanglement in one-dimensional Ising model with a tilted magnetic field

Wang Qi Wang Xiao-Qian

Properties of entanglement in one-dimensional Ising model with a tilted magnetic field

Wang Qi, Wang Xiao-Qian
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Publishing process
  • Received Date:  11 June 2013
  • Accepted Date:  14 August 2013
  • Published Online:  05 November 2013

Properties of entanglement in one-dimensional Ising model with a tilted magnetic field

  • 1. School of Science, Changchun University of Science and Technology, Changchun 130022, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 11247260, 11305020).

Abstract: We study the entanglement properties in a one-dimensional Ising chain with a tilted magnetic field that is capable of showing both integrable and nonintegrable behaviors. Here the pairwise entanglement is characterized by concurrence and the multipartite entanglement is characterized by the Q measure. According to the entanglement properties of the ground state in the Ising mode, which have tilt angle, we can find that the Q measure decreases with the increasing of the strength of external field. And the phase transition property of the system is changed with the increase of tilt angle for the external magnetic field. We also consider the evolution of entanglement in this model, and find that the nonintegrability can suppress the pairwise entanglement but promotes the multipartite entanglement with the integrable system.

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