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arXiv · 2610.03349

Correlation functions of the 19-vertex IRF model and its integrable quantum spin-1 chain

T. S. Tavares·H. B. Abreu·G. A. P. Ribeiro
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Abstract

We consider the interaction-round-a-face version of the nineteen-vertex model and derive a new quantum spin-$1$ chain. In the isotropic limit, the associated spin chain can be seen as three coupled Babujian-Taktahjan spin chains with different boundary twists. We compute the ground state short-distance correlation functions of the isotropic model in the thermodynamic limit by exploiting the shared integrable structure between the models.

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T. S. Tavares, H. B. Abreu, G. A. P. Ribeiro. 2026-10-02. Correlation functions of the 19-vertex IRF model and its integrable quantum spin-1 chain. https://arxiv.org/abs/2610.03349

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