Journal of Statistical Physics, Vol. 50, Nos. 1/2, 1988. p. 405-437.
A study is made of the low-temperature interfacial properties of a driven system with a single conserved density whose bulk properties were first analyzed, using computer simulations, by Katz, Lebowitz, and Spohn in 1983. The system corresponds to a nearest neighbor interacting lattice gas of charged particles (hence conserved order parameter), which are acted upon by a uniform, constant external electric field E. Starting from a bulk kinetic equation, an integral equation for the interface is derived. Nonlocal coupling between different parts of the interface arises from local particle conservation. The interface at any angle is shown to be stable against small deformations of all wavelengths that are large compared to the interfacial width...