Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1999-11-16
Physics
Condensed Matter
Statistical Mechanics
5 pages. To appear in J.Phys.A:Math.Gen. 32 (2000) L1
Scientific paper
We propose a new and general method for deriving exact density functionals in one dimension for lattice gases with finite-range pairwise interactions. Corresponding continuum functionals are derived by applying a proper limiting procedure. The method is based on a generalised Markov property, which allows us to set up a rather transparent scheme that covers all previously known exact functionals for one-dimensional lattice gas or fluid systems. Implications for a systematic construction of approximate density functionals in higher dimensions are pointed out.
Buschle Joachim
Dieterich Wolfgang
Maass Philipp
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