Topological quantum phase transition in the extended Kitaev spin model

Topological quantum phase transition in the extended Kitaev spin model
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扩展基塔耶夫自旋模型中的拓扑量子相变

DOI:
10.1103/physrevb.79.134431
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发表时间:
2009-02
期刊:
影响因子:
3.7
通讯作者:
--
中科院分区:
物理与天体物理2区
文献类型:
--
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We study the quantum phase transition between Abelian and non-Abelian phases in an extended Kitaev spin model on the honeycomb lattice, where the periodic boundary condition is applied by placing the lattice on a torus. Our analytical results show that this spin model exhibits a continuous quantum phase transition. Also, we reveal the relationship between bipartite entanglement and the ground-state energy. Our approach directly shows that both the entanglement and the ground-state energy can be used to characterize the topological quantum phase transition in the extended Kitaev spin model.
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