Nonlinear Partial Difference Equations for the Two-Dimensional Ising Model

Barry M. McCoy; Tai Tsun Wu

doi:10.1103/PhysRevLett.45.675

Nonlinear Partial Difference Equations for the Two-Dimensional Ising Model

Barry M. McCoy and Tai Tsun Wu

Phys. Rev. Lett. 45, 675 – Published 1 September 1980

Abstract

The two-point function of the two-dimensional Ising model at arbitrary temperature is expressed in terms of the solution of a nonlinear partial difference equation. From this difference equation the known results for the two-point function of the Ising field theory may be regained as a special case.