Expansions about Free-Fermion Models
arXiv:math-ph/0303023 · doi:10.1063/1.1626270
Abstract
A simple technique for expanding the free energy of general six-vertex models about free-fermion points is introduced. This technique is used to verify a Coulomb gas prediction about the behavior of the leading singularity in the free energy of the staggered F-model at zero staggered field.
8 pages