Eight-vertex model over Grassmann algebra

T.K. Kassenova, Pyotr Tsyba, Olga Razina

2019

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DOI 10.1088/1742-6596/1391/1/012035

Data confidence 70 medium

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Abstract

Abstract An eight-vertex model on a square lattice over a Grassmann algebra is investigated using an equation that is a three-dimensional generalization of the Yang-Baxter equation. Anticommuting quantum spin systems are studied, where the quasiclassical limit leads to some abstract classical physics with anticommuting variables. The solution of the quantum Yang-Baxter equation is the R - matrix, which corresponds to the transfer R - matrix of the eight-vertex model of statistical mechanics.