Growth models, random matrices and Painleve transcendents

Details Growth models, random matrices and Painleve transcendents Growth models, random matrices and Painleve transcendents

2003-09-29

arxiv.org/abs/math-ph/0309058v1

Nonlinearity, volume 16, issue 6, pages R27 - R49, 2003

Physics

Mathematical Physics

27 pages, 5 figures

Scientific paper

10.1088/0951-7715/16/6/201

The Hammersley process relates to the statistical properties of the maximum length of all up/right paths connecting random points of a given density in the unit square from (0,0) to (1,1). This process can also be interpreted in terms of the height of the polynuclear growth model, or the length of the longest increasing subsequence in a random permutation. The cumulative distribution of the longest path length can be written in terms of an average over the unitary group. Versions of the Hammersley process in which the points are constrained to have certain symmetries of the square allow similar formulas. The derivation of these formulas is reviewed. Generalizing the original model to have point sources along two boundaries of the square, and appropriately scaling the parameters gives a model in the KPZ universality class. Following works of Baik and Rains, and Pr\"ahofer and Spohn, we review the calculation of the scaled cumulative distribution, in which a particular Painlev\'e II transcendent plays a prominent role.

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