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Journal of Statistical Physics
Article . 1995 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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zbMATH Open
Article . 1995
Data sources: zbMATH Open
https://dx.doi.org/10.48550/ar...
Article . 1994
License: arXiv Non-Exclusive Distribution
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Generalized Boltzmann equation for lattice gas automata

Generalized Boltzmann equation for lattice gas automata.
Authors: Bussemaker, H. J.; Ernst, M. H.; Dufty, J. W.;

Generalized Boltzmann equation for lattice gas automata

Abstract

In this paper, for the first time a theory is formulated that predicts velocity and spatial correlations between occupation numbers that occur in lattice gas automata violating semi-detailed balance. Starting from a coupled BBGKY hierarchy for the $n$-particle distribution functions, cluster expansion techniques are used to derive approximate kinetic equations. In zeroth approximation the standard nonlinear Boltzmann equation is obtained; the next approximation yields the ring kinetic equation, similar to that for hard sphere systems, describing the time evolution of pair correlations. As a quantitative test we calculate equal time correlation functions in equilibrium for two models that violate semi-detailed balance. One is a model of interacting random walkers on a line, the other one is a two-dimensional fluid type model on a triangular lattice. The numerical predictions agree very well with computer simulations.

31 pages LaTeX, 12 uuencoded tar-compressed Encapsulated PostScript figures (`psfig' macro), hardcopies available on request, 78kb + 52kb

Keywords

non-Gibbs states, Cellular Automata and Lattice Gases (nlin.CG), Kinetic theory of gases in time-dependent statistical mechanics, lattice gas automata, Completely integrable infinite-dimensional Hamiltonian and Lagrangian systems, integration methods, integrability tests, integrable hierarchies (KdV, KP, Toda, etc.), FOS: Physical sciences, Dynamics of random walks, random surfaces, lattice animals, etc. in time-dependent statistical mechanics, static pair correlations, BBGKY hierarchy, Numerical methods of time-dependent statistical mechanics, Particle methods and lattice-gas methods, lack of detailed balance, Nonlinear Sciences - Cellular Automata and Lattice Gases

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
18
Average
Top 10%
Top 10%
Green
bronze