The raise and peel model of a fluctuating interface

Details The raise and peel model of a fluctuating interface The raise and peel model of a fluctuating interface

2003-01-23

arxiv.org/abs/cond-mat/0301430v1

J.Statist.Phys. 114 (2004) 1-35

Physics

Condensed Matter

Statistical Mechanics

LaTeX, 34 pages, 23 Postscript figures

Scientific paper

10.1023/B:JOSS.0000003102.81727.

We propose a one-dimensional nonlocal stochastic model of adsorption and desorption depending on one parameter, the adsorption rate. At a special value of this parameter, the model has some interesting features. For example, the spectrum is given by conformal field theory, and the stationary non-equilibrium probability distribution is given by the two-dimensional equilibrium distribution of the ice model with domain wall type boundary conditions. This connection is used to find exact analytic expressions for several quantities of the stochastic model. Vice versa, some understanding of the ice model with domain wall type boundary conditions can be obtained by the study of the stochastic model. At the special point we study several properties of the model, such as the height fluctuations as well as cluster and avalanche distributions. The latter has a long tail which shows that the model exhibits self organized criticality. We also find in the stationary state a special phase transition without enhancement and with a crossover exponent $\phi=2/3$. Furthermore, we study the phase diagram of the model as a function of the adsorption rate and find two massive phases and a scale invariant phase where conformal invariance is broken.

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