Dc. Cabra et al., A NONPERTURBATIVE APPROACH TO THE RANDOM-BOND ISING-MODEL, Journal of physics. A, mathematical and general, 30(24), 1997, pp. 8415-8426
We study the N --> 0 limit of the O(N) Gross-Neveu model in the framew
ork of the massless form-factor approach. This model is related to the
continuum limit of the Ising model with random bonds via the replica
method. We discuss how this method may be useful in calculating correl
ation functions of physical operators. The identification of non-pertu
rbative fixed points of the O(N) Gross-Neveu model is pursued by its m
apping to a Wess-Zumino-Witten model.