I. Pagonabarraga et Jm. Rubi, LONG-RANGE CORRELATIONS IN DIFFUSIVE SYSTEMS AWAY FROM EQUILIBRIUM, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 49(1), 1994, pp. 267-272
We study the dynamics of density fluctuations in purely diffusive syst
ems away from equilibrium, Under some conditions the static density co
rrelation function becomes long ranged. We then analyze this behavior
in the framework of nonequilibrium fluctuating hydrodynamics.