Two-point correlation functions in perturbed minimal models

Abstract

Two point correlation functions of the off-critical primary fields ϕ_{1, 1+s} are considered in the perturbed minimal models M_{2, 2N+3} + ϕ_{1,3}. They are given as infinite series of form factor contributions. The form factors of ϕ_{1, 1+s} are conjectured from the known results for those of ϕ_{1,2} and ϕ_{1,3}. The conjectured form factors are rewritten in the form which is convenient for summing up. The final expression of the two point functions is written as a determinant of an integral operator.