INTERACTION-SITE REPRESENTATION OF THE SMOLUCHOWSKI-VLASOV EQUATION - THE SPACE-TIME CORRELATION-FUNCTIONS IN A MOLECULAR LIQUID

A site-site representation of the Smoluchowski-Vlasov equation is proposed based on the generalized Langevin equation, and on the site-site Ornstein-Zernike equation for the molecular liquid. The method is applied for calculating the space-time pair correlation function proposed by van Hove. The results are compared with a molecular dynamics simulation of water. The site-site Smoluchowski-Vlasov equation predicts most of the essential features of the van Hove function for water.