A comment on free-fermion conditions for lattice models in two and more dimensions
arXiv:hep-th/9603162 · doi:10.1016/0370-2693(96)00580-1
Abstract
We analyze free-fermion conditions on vertex models. We show --by examining examples of vertex models on square, triangular, and cubic lattices-- how they amount to degeneration conditions for known symmetries of the Boltzmann weights, and propose a general scheme for such a process in two and more dimensions.
12 pages, plain Latex