DIFFUSION IN A DISORDERED SYSTEM WITH A DIPOLE-DIPOLE INTERACTION

Random walks in a disordered medium with a dipole-dipole transport are studied, ft is proved that the long-time asymptotic behavior is of a diffusion character and the diffusion coefficient is determined. The analysis is based on a new, efficient, numerical-modeling method employing direct calculation of the Fourier transform of the propagator and periodic continuation of the system without periodic continuation of the initial condition. (C) 1995 American Institute of Physics.