Watermelon configurations with wall interaction: exact and asymptotic results

Details Watermelon configurations with wall interaction: exact and asymptotic results Watermelon configurations with wall interaction: exact and asymptotic results

2005-06-16

arxiv.org/abs/math/0506323v1

J. Physics Conf. Series 42 (2006), 179--212.

Mathematics

Combinatorics

AmS-TeX, 41 pages

Scientific paper

10.1088/1742-6596/42/1/017

We perform an exact and asymptotic analysis of the model of $n$ vicious walkers interacting with a wall via contact potentials, a model introduced by Brak, Essam and Owczarek. More specifically, we study the partition function of watermelon configurations which start on the wall, but may end at arbitrary height, and their mean number of contacts with the wall. We improve and extend the earlier (partially non-rigorous) results by Brak, Essam and Owczarek, providing new exact results, and more precise and more general asymptotic results, in particular full asymptotic expansions for the partition function and the mean number of contacts. Furthermore, we relate this circle of problems to earlier results in the combinatorial and statistical literature.

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