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Enhanced the thermal Entanglement in Anisotropy XYZ Heisenberg Chain

L. Zhou·H. S. Song·Y. Q. Guo
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Abstract

The thermal entanglement in Heisenberg $XYZ$ chain is investigated in the presence of external magnetic field $B$. In the two-qubit system, the critical magnetic field $B_c$ is increased because of introducing the interaction of the z-component of two neighboring spins $J_z$. This interaction not only improves the critical temperature $T_c,$ but also enhances the entanglement for particular fixed $B$. We also analyze the pairwise entanglement between nearest neighbors in three qubits. The pairwise entanglement, for a fixed $T$, can be strong by controlling $B$ and $J_z$. PACS: 03.65. Ud, 03.67. -a, 75.10. Jm

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L. Zhou, H. S. Song, Y. Q. Guo. 2003-06-04. Enhanced the thermal Entanglement in Anisotropy XYZ Heisenberg Chain. https://doi.org/10.1103/physreva.68.024301

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