title: Density correlations in lattice gases in contact with a confining wall
abstract: A discrete version of classical density functional theory applicable to lattice gases or Ising spin systems is proposed, which accounts for the requirement of particle-hole symmetry in the presence of pairwise forces. Results of our theory for density profiles and two-particle correlation functions in two-dimensional strip geometries compare favorably with Monte Carlo simulations. Some problems with standard "weighted-density" approximation schemes, when applied to lattice gases, are pointed out.
authors.affiliation: Fakultat fur Physik, Universitat Konstanz, D-78457 Konstanz, Germany.
authors.initials: J
authors.lastname: Reinhard
authors.initials: W
authors.lastname: Dieterich
authors.initials: P
authors.lastname: Maass
authors.initials: HL
authors.lastname: Frisch