Marko Wölki et al 2006 J. Phys. A: Math. Gen. 39 33 doi:10.1088/0305-4470/39/1/003
Asymmetric exclusion processes with shuffled dynamics
Marko Wölki1, Andreas Schadschneider2 and Michael Schreckenberg1
Show affiliationsThe asymmetric simple exclusion process (ASEP) with periodic boundary conditions is investigated for shuffled dynamics. In this type of update, in each discrete timestep the particles are updated in a random sequence. Such an update is important for several applications, e.g., for certain models of pedestrian flow in two dimensions. For the ASEP with shuffled dynamics and a related truncated process exact results are obtained for deterministic motion (p = 1). Since the shuffled dynamics is intrinsically stochastic, also this case is nontrivial. For the case of stochastic motion (0 < p < 1) it is shown that, in contrast to all other updates studied previously, the ASEP with shuffled update does not have a product measure steady state. Approximative formulae for the steady-state distribution and fundamental diagram are derived that are in very good agreement with simulation data.
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Issue 1 (6 January 2006)
Received 15 August 2005, in final form 3 November 2005
Published 7 December 2005
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Asymmetric exclusion processes with shuffled dynamics
Marko Wölki et al 2006 J. Phys. A: Math. Gen. 39 33
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