@statphys23

Boundary-induced phase transitions in two-component lattice gases

, , , and . Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)

Abstract

Single-file diffusion with two species of particles and open boundaries exhibits much richer non-equilibrium behaviour than well-studied one-component systems like the asymmetric simple exclusion process and still leads to surprises. Using rigorous and numerical methods we reveal a self-organized amplification cycle for fluctuations to be responsible for boundary-induced spontaneous symmetry breaking in a one-dimensional bulk driven lattice gas model with two species of particles. Unexpectedly, also in the purely boundary-driven case (symmetric two-component exclusion) a boundary-induced phase transition occurs. This phase transition is associated with a structural change of a boundary layer which is relevant for understanding tracer-exchange in zeolite grains.

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