蝴蝶结格子上自旋为1/2的伊辛模型作为精确可解的自由费米子模型
The spin-1/2 Ising model on the bow-tie lattice as an exactly soluble free-fermion model
摘要:
通过建立自旋为1/2的伊辛模型与相应的自由费米子八顶点模型之间的精确映射关系,精确求解了蝴蝶结晶格上自旋为1/2的伊辛模型.获得了沿三个不同空间方向具有三种不同交换相互作用的各向异性蝴蝶结晶格的基态和有限温度相图。
英文摘要:
The spin-1/2 Ising model on the bow-tie lattice is exactly solved by establishing a precise mapping relationship with its corresponding free-fermion eight-vertex model. Ground-state and finite-temperature phase diagrams are obtained for the anisotropic bow-tie lattice with three different exchange interactions along three different spatial directions.
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