BRIDGE FUNCTION AND CAVITY CORRELATION-FUNCTION FROM SIMULATION - IMPLICATIONS ON CLOSURE RELATIONS

In this paper we review recent molecular simulation results For the br idge function and cavity correlation function of the Lennard-Jones and soft-sphere fluids. We demonstrate that closures similar to the Percu s-Yevick (PY) closure are poor at short range and should only be valid for repulsive fluids. Finally, by comparing with our simulation resul ts for the Lennard-Jones bridge function, we show how to rescale the L ennard-Jones bridge Function so that it can be approximated with the b ridge function for a repulsive fluid.