<p>Spin chain system with three spins is to be investigated under the influences of Heisenberg XYZ Hamiltonian, the external magnetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interaction. In this paper, we are to principally consider the influences on the dynamics of quantum correlations, such as the quantum entanglement and 2-norm geometric quantum discord, which would be given by the exchange interaction, the external magnetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interactions. The obtained results show that the vibration character of quantum correlation change not only when transfering from Heisenberg XYZ model to Heisenberg XXZ model but also when translating from Heisenberg XXZ model to Heisenberg XXX model, that is, the sudden variation of the vibration character of quantum correlations according to the smooth variation in the exchange interactions are to be found. The results obtained also indicate that the roles of x- and y-components of exchange interaction are different, and the external magetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interaction play the key role in the enhancement and renewal of quantum correlation.</p>

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Dynamic Behavior of Quantum Correlation in Three-Spin Heisenberg XYZ Model Characterized by Dzyaloshinskii-Moriya Interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony Interaction

  • Su-Bok Ri,
  • Ji-Hyon Han,
  • Yong-Ho Jang,
  • Chol-Jin O

摘要

Spin chain system with three spins is to be investigated under the influences of Heisenberg XYZ Hamiltonian, the external magnetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interaction. In this paper, we are to principally consider the influences on the dynamics of quantum correlations, such as the quantum entanglement and 2-norm geometric quantum discord, which would be given by the exchange interaction, the external magnetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interactions. The obtained results show that the vibration character of quantum correlation change not only when transfering from Heisenberg XYZ model to Heisenberg XXZ model but also when translating from Heisenberg XXZ model to Heisenberg XXX model, that is, the sudden variation of the vibration character of quantum correlations according to the smooth variation in the exchange interactions are to be found. The results obtained also indicate that the roles of x- and y-components of exchange interaction are different, and the external magetic field, Dzyaloshinskii-Moriya interaction and Kaplan–Shekhtman–Entin-Wohlman–Aharony interaction play the key role in the enhancement and renewal of quantum correlation.