Form Factors of the Elementary Field in the Bullough-Dodd Model

Fring, A., Mussardo, G. & Simonetti, P. (1993). Form Factors of the Elementary Field in the Bullough-Dodd Model. Physics Letters B, 307(1-2), pp. 83-90. doi: 10.1016/0370-2693(93)90196-O

Abstract

We derive the recursive equations for the form factors of the local hermitian operators in the Bullough-Dodd model. At the self-dual point of the theory, the form factors of the fundamental field of the Bullough-Dodd model are equal to those of the fundamental field of the Sinh-Gordon model at a specific value of the coupling constant.