Quasi-classical expansion of the star-triangle relation and integrable systems on quad-graphs
Quasi-classical expansion of the star-triangle relation and integrable systems on quad-graphs
In this paper we give an overview of exactly solved edge-interaction models, where the spins are placed on sites of a planar lattice and interact through edges connecting the sites. We only consider the case of a single spin degree of freedom at each site of the lattice. The Yang–Baxter …