3 years ago

# Excursion Processes Associated with Elliptic Combinatorics.

Makoto Katori, Hiroya Baba

Researching elliptic analogues for equalities and formulas is a new trend in enumerative combinatorics which has followed the previous trend of studying $q$-analogues. Recently Schlosser proposed a lattice path model in the square lattice with a family of totally elliptic weight-functions including several complex parameters and discussed an elliptic extension of the binomial theorem. In the present paper, we introduce a family of discrete-time excursion processes on ${\mathbb{Z}}$ starting from the origin and returning to the origin in a given time duration $2T$ associated with Schlosser's elliptic combinatorics. The processes are inhomogeneous both in space and time and hence expected to provide new models in non-equilibrium statistical mechanics. By numerical calculation we show that the maximum likelihood trajectories on the spatio-temporal plane of the elliptic excursion processes and of their reduced trigonometric versions are not straight lines in general but are nontrivially curved depending on parameters. We analyze asymptotic probability laws in the long-term limit $T \to \infty$ for a simplified trigonometric version of excursion process.

Publisher URL: http://arxiv.org/abs/1711.00389

DOI: arXiv:1711.00389v1

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