Integrable anyon chains: from fusion rules to face models to effective field theories

Integrable anyon chains: from fusion rules to face models to effective field theories
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可积分任何链:从融合规则到面模型到有效场论

DOI:
10.1016/j.nuclphysb.2014.10.017
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发表时间:
2014
期刊:
Nuclear Physics
影响因子:
--
通讯作者:
Holger Frahm
Holger Frahm
中科院分区:
--
文献类型:
--
作者:
Peter E. Finch;Michael Flohr;Holger Frahm

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从代数SO(5)2的融合规则出发,我们构造了具有交换转移矩阵的相互作用任意子的一维格点模型。在大谱参数的极限下,由转移矩阵恢复了任意子链的守恒拓扑荷。用Bethe近似方法研究了模型在热力学极限和低能激发下的性质。两个任意子模型在零温度下是临界的。从有限尺寸谱的分析,我们发现,它们是有效地描述的Virasoro代数,即W B 2和W D 5的扩展下不变的有理共形场论。后者包含具有半旋和四分之一旋的原色。模块划分函数和融合规则的推导和发现是一致的格模型的结果。
Starting from the fusion rules for the algebra SO (5) 2 we construct one-dimensional lattice models of interacting anyons with commuting transfer matrices of ‘interactions round the face’(IRF) type. The conserved topological charges of the anyon chain are recovered from the transfer matrices in the limit of large spectral parameter. The properties of the models in the thermodynamic limit and the low energy excitations are studied using Bethe ansatz methods. Two of the anyon models are critical at zero temperature. From the analysis of the finite size spectrum we find that they are effectively described by rational conformal field theories invariant under extensions of the Virasoro algebra, namely W B 2 and W D 5, respectively. The latter contains primaries with half and quarter spin. The modular partition function and fusion rules are derived and found to be consistent with the results for the lattice model.
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