Two-channel totally asymmetric simple exclusion processes

摘要: Totally asymmetric simple exclusion processes, consisting of two coupled parallel lattice chains with particles interacting hard-core and moving along the channels between them, are considered. In limit strong coupling channels, particle currents, density profiles a phase diagram calculated exactly by mapping system into an effective one-channel totally model. For intermediate couplings, approximate theory, that describes dynamics in vertical clusters corresponding sites neglects correlations different clusters, is developed. It found that, similarly to case there three stationary state phases, although boundaries properties strongly depend on inter-channel coupling. Extensive computer Monte Carlo simulations fully support theoretical predictions.