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- Title
Thermal entanglement of the mixed spin-1/2 and spin-5/2 Heisenberg model under an external magnetic field.
- Authors
Guo, Ke-Tao; Xiang, Shao-Hui; Xu, Hong-Yu; Li, Xiao-Hong
- Abstract
We use the concept of negativity to study the entanglement of spin-1/2 and spin-5/2 antiferromagnetic Heisenberg model with an inhomogeneous magnetic field. Analytical conclusions of the model are acquired. It is found that the critical temperature $$T_\mathrm{c}$$ goes up, as the increase of anisotropy parameter $$k$$ . The temperature $$T_\mathrm{c}$$ becomes bigger than the results of spin-1/2 and spin-3/2 Heisenberg XXZ chain for the same value of $$k$$ . And we can gain more entanglement at higher temperature by coordinating the value of inhomogeneity $$b$$ .
- Subjects
QUANTUM entanglement; QUANTUM spin models; HEISENBERG model; ATOMS in external magnetic fields; ANISOTROPY; CRITICAL temperature
- Publication
Quantum Information Processing, 2014, Vol 13, Issue 7, p1511
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-014-0745-7