DRIVEN DIFFUSIVE SYSTEMS - AN INTRODUCTION AND RECENT DEVELOPMENTS

Nonequilibrium steady states in driven diffusive systems exhibit many features which are surprising or counterintuitive, given our experienc e with equilibrium systems. We introduce the prototype model and revie w its unusual behavior in different temperature regimes, from both a s imulational and analytic view point We then present some recent work, focusing on the phase diagrams of driven bi-layer systems and two-spec ies lattice gases. Several unresolved puzzles are posed. (C) 1998 Else vier Science B.V. All rights reserved.