Eur. Phys. J. Special Topics 216, 127-132 (2013)
https://doi.org/10.1140/epjst/e2013-01735-1

Regular Article

Induced long-time correlations in a two-component lattice gas

Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauky 46, 03028 Kyiv, Ukraine

^a e-mail: lukyan@iop.kiev.ua

Received: 30 November 2012
Revised: 6 December 2012
Published online: 31 January 2013

Abstract

The distinguishability of at least two species of particles in the classical lattice gas with no interactions except hard-core exclusion entails additional interparticle correlations. A nonlinear mixing flow appears and manifests itself most pronouncedly in the case of signi- ficant difference between mobilities of species. It may cause induced correlations for a slow component mediated by a fast one. In the quasi-one-dimensional case, the long-time correlations are demonstrated to take place in a slow component, which is similar to the hydrodynamic correlations between colloidal particles. In the adiabatic approximation, these correlations may come into play only in the non-equilibrium case with the flow of a fast component present in the system.