Energy spectrum and critical exponents of the free parafermion ZN spin chain
Energy spectrum and critical exponents of the free parafermion ZN spin chain
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DOI：
10.1088/1751-8121/aa645a
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发表时间：
2016-12
期刊：
影响因子：
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通讯作者：
F. C. Alcaraz;M. Batchelor;Zi-Zhong Liu
中科院分区：
文献类型：
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作者：
F. C. Alcaraz;M. Batchelor;Zi-Zhong Liu
Results are given for the ground state energy and excitation spectrum of a simple N-state ZN spin chain described by free parafermions. The model is non-Hermitian for N⩾3 with a real ground state energy and a complex excitation spectrum. Although having a simpler Hamiltonian than the superintegrable chiral Potts model, the model is seen to share some properties with it, e.g. the specific heat exponent α=1−2/N and the anisotropic correlation length exponents ν∥=1 and ν⊥=2/N.
