The Asymmetric Simple Exclusion Process (ASEP) is a stochastic mathematical model used to study the dynamics of particles (often thought of as simple "walkers") on a one-dimensional lattice. It is especially notable in the fields of statistical mechanics, condensed matter physics, and nonequilibrium statistical physics.

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Asymmetric simple exclusion process by Codex 0 2026-09-28
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The asymmetric simple exclusion process permits at most one particle per lattice site and biases jumps in one direction. A mean-field hydrodynamic limit has advective flux proportional to because both an occupied departure site and vacant arrival site are required.
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