Exact matrix-product states for parallel dynamics: Open boundaries and excess mass on the ring

Abstract

In this paper it is shown that the steady-state weights of the asymmetric simple exclusion process (ASEP) with open boundaries and parallel update can be written as a product of a scalar pair-factorized and a matrix-product state. This type of state is also obtained for an ASEP on a ring in which particles can move one or two sites. The dynamics leads to the formation of an excess hole that plays the role of a defect. We expect the process to play a similar role for parallel dynamics as the well-known ASEP with a single defect-particle (that is obtained in the continuous-time limit) especially for the study of shocks. The process exhibits a first-order phase transition between two phases with different defect velocities. These are calculated exactly from the process-generating function.

21 pages, 4 figures

References in corpus (4)

• Nonequilibrium Steady States of Matrix Product Form: A Solver's Guide
• Critical phenomena and universal dynamics in one-dimensional driven diffusive systems with two species of particles
• Asymmetric exclusion processes with shuffled dynamics
• Traffic jams and ordering far from thermal equilibrium

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• On the blockage problem and the non-analyticity of the current for the parallel TASEP on a ring
• The parallel TASEP, fixed particle number and weighted Motzkin paths
• Transfer matrices for the totally asymmetric exclusion process