Domain wall partition functions and KP
arXiv:0901.2251 · doi:10.1088/1742-5468/2009/03/P03017
Abstract
We observe that the partition function of the six vertex model on a finite square lattice with domain wall boundary conditions is (a restriction of) a KP tau function and express it as an expectation value of charged free fermions (up to an overall normalization).
16 pages, LaTeX2e