Shock-dynamics of two-lane driven lattice gases

Details Shock-dynamics of two-lane driven lattice gases Shock-dynamics of two-lane driven lattice gases

2010-05-10

arxiv.org/abs/1005.1504v1

Physics

Condensed Matter

Statistical Mechanics

accepted for publication in JSTAT

Scientific paper

Driven lattice gases as the ASEP are useful tools for the modeling of various stochastic transport processes carried out by self-driven particles, such as molecular motors or vehicles in road traffic. Often these processes take place in one-dimensional systems offering several tracks to the particles, and in many cases the particles are able to change track with a given rate. In this work we consider the case of strong coupling where the hopping rate along the tracks and the exchange rates are of the same order, and show how a phenomenological approach based on a domain wall theory can describe the dynamics of the system. In particular, the domain walls on the different tracks form pairs, whose dynamics dominate the behavior of the system.

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