A DETERMINANT REPRESENTATION FOR A CORRELATION-FUNCTION OF THE SCALING LEE-YANG MODEL

We consider the scaling Lee-Yang model. It corresponds to the unique p erturbation of the minimal CFT model M-2,M-5. This model is not unitar y. We are using an expression for form factors in terms of symmetric p olynomials in order to obtain a closed expression for the correlation function of the trace of the energy-momentum tenser. This expression i s a determinant of an integral operator. Similar determinant represent ations were proven to be useful not only for quantum correlation funct ions but also in matrix models.