Boundary correlations for the Z-invariant Ising Model
Résumé
Consider the natural graph associated to a rhombus tiling of a polygonal region
in the plane. The spin correlations between boundary vertices of this graph in
the Z-invariant Ising model do not depend on the choice of the rhombus tiling
but only on the region. We provide a matrix formula depending on the region
which allows practical computations of boundary correlations in this setting,
extending the results of Galashin in the critical case.