Matrix Product Steady States as Superposition of Product Shock Measures in 1D Driven Systems

Details Matrix Product Steady States as Superposition of Product Shock Measures in 1D Driven Systems Matrix Product Steady States as Superposition of Product Shock Measures in 1D Driven Systems

2007-07-30

arxiv.org/abs/0707.4341v2

J. Stat. Mech. (2007) P10013

Physics

Condensed Matter

Statistical Mechanics

12 pages, 1 figure

Scientific paper

10.1088/1742-5468/2007/10/P10013

It is known that exact traveling wave solutions exist for families of (n+1)-states stochastic one-dimensional non-equilibrium lattice models with open boundaries provided that some constraints on the reaction rates are fulfilled. These solutions describe the diffusive motion of a product shock or a domain wall with the dynamics of a simple biased random walker. The steady state of these systems can be written in terms of linear superposition of such shocks or domain walls. These steady states can also be expressed in a matrix product form. We show that in this case the associated quadratic algebra of the system has always a two-dimensional representation with a generic structure. A couple of examples for n=1 and n=2 cases are presented.

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