Density of critical clusters in strips of strongly disordered systems

Details Density of critical clusters in strips of strongly disordered systems Density of critical clusters in strips of strongly disordered systems

2008-05-14

arxiv.org/abs/0805.2006v1

Phys. Rev. E78, 061109 (2008)

Physics

Condensed Matter

Statistical Mechanics

9 pages, 9 figures

Scientific paper

10.1103/PhysRevE.78.061109

We consider two models with disorder dominated critical points and study the distribution of clusters which are confined in strips and touch one or both boundaries. For the classical random bond Potts model in the large-q limit we study optimal Fortuin-Kasteleyn clusters by combinatorial optimization algorithm. For the random transverse-field Ising chain clusters are defined and calculated through the strong disorder renormalization group method. The numerically calculated density profiles close to the boundaries are shown to follow scaling predictions. For the random bond Potts model we have obtained accurate numerical estimates for the critical exponents and demonstrated that the density profiles are well described by conformal formulae.

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