SCATTERING FUNCTION FOR A MODEL OF INTERACTING SURFACES

The two-point correlation function of an ensemble of interacting close d self-avoiding surfaces on a cubic lattice is analyzed in the disorde red phase, which corresponds to the paramagnetic region in a related s pin formulation. Mean-field theory and Monte Carlo simulations predict the existence of a disorder line which corresponds to a transition fr om an exponential decay to an oscillatory damped behavior of the two-p oint correlation function. The relevance of the results for the descri ption of amphiphilic systems in a microemulsion phase is discussed. Th e scattering function is also calculated for a bicontinuous phase coex isting with the paramagnetic phase.