DYNAMIC LATTICE-MODEL SIMULATION

We present an algorithm for carrying out time-dependent canonical Mont e Carlo simulations on a lattice with single occupancy of each site an d arbitrary site-site interactions. The method incorporates velocities at each site whose components are proportional to the probability of exchange with each of the neighboring sites. Kinetic and potential ene rgy are exchanged through the choice of trial final velocities for att empted exchanges which are accepted or rejected using the Metropolis a lgorithm. Caculations are carried out for the two-dimensional Ising mo del for which the exact partition function is known. Our method reprod uces the results of standard Monte Carlo simulations with comparable a ccuracy, and in addition allows the calculation of dynamical propertie s previously inaccessible with traditional methods. Results are presen ted for self-diffusion, interfacial tension, and shear viscosity.