DYNAMICAL EXTENSIONS OF THE EDWARDS MODEL

A simple random walk in space if given a dynamical life is described by the Rouse model. The two extensions required to represent the movement of a macromolecule in solution are interactions, and hydrodynamic effects. It is argued that these can be incorporated into equations which then show, as a bonus, that the dynamics fully honours the topological integrity of the molecules. These ideas can be extended to suspensions of liquid drops, for which exact, topologically correct equations can be written down.