ORDERING DYNAMICS IN A NONCONSERVED SYSTEM WITH ATTRACTIVE LONG-RANGE INTERACTIONS

Phase ordering in a system with an attractive long range interaction is studied by means of an interfacial approach. We start with a time-dependent Ginzburg-Landau (IDGL)-like model equation for a scalar non-conserved order parameter. Because of the long range term, there appears a long tail in the order parameter profile away from an interface separating two different ordered states. This tail causes a long range interaction between interfaces, which plays a crucial role for the ordering kinetics. By generalizing the previous theory for a short range interaction, the correlation function for the local order parameter field is calculated approximately in the asymptotic scaling limit.