Skrypnik, W.
(Symmetry, Integrability and Geometry: Methods and Applications, 2006)
A class of general spin 1/2 lattice models on hyper-cubic lattice Zd, whose Hamiltonians are sums of two functions depending on the Pauli matrices S¹, S² and S³, respectively, are found, which have Gibbsian eigen (ground) ...