J. Phys. Soc. Jpn. 69, pp. 1352-1355 (2000) [4 Pages]
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Received September 29, 1999
A cellular automaton of multiple random walkers is proposed to simulate d -dimensional many-body interacting lattice gas system. The fully parallel dynamics of the random walkers in d -dimensional hyper cubic lattice system is defined by introducing a simple probabilistic local rule set which prohibits the multiple occupancy of the walkers on a lattice site and keeps the conservation of the total number at any time. An equation which essentially governs the dynamics is derived by constructing a Boltzmann transport equation. An expression for the diffusion constant is obtained analytically and compared with the simulation results.
©2000 The Physical Society of Japan
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