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Persistent spin current and entanglement in the anisotropic spin ring i | Zi-Xiang Hu
; You-Quan Li
; | Date: |
9 Jan 2006 | Subject: | Strongly Correlated Electrons | Abstract: | We investigate the ground state persistent spin current and the pair entanglement in one-dimensional antiferromagnetic anisotropic Heisenberg ring with twisted boundary conditions. Solving Bethe ansatz equations numerically, we calculate the dependence of the ground state energy on the total magnetic flux through the ring, and the resulting persistent current. Motivated by recent development of quantum entanglement theory, we study the properties of the ground state concurrence under the influence of the flux through the anisotropic Heisenberg ring. We also include an external magnetic field and discuss the properties of the persistent current and the concurrence in the presence of the magnetic field. | Source: | arXiv, cond-mat/0601153 | Services: | Forum | Review | PDF | Favorites |
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