Back to Search Start Over

Arctic Curves in path models from the Tangent Method

Authors :
Di Francesco, Philippe
Lapa, Matthew F.
Publication Year :
2017

Abstract

Recently, Colomo and Sportiello introduced a powerful method, known as the \emph{Tangent Method}, for computing the arctic curve in statistical models which have a (non- or weakly-) intersecting lattice path formulation. We apply the Tangent Method to compute arctic curves in various models: the domino tiling of the Aztec diamond for which we recover the celebrated arctic circle; a model of Dyck paths equivalent to the rhombus tiling of a half-hexagon for which we find an arctic half-ellipse; another rhombus tiling model with an arctic parabola; the vertically symmetric alternating sign matrices, where we find the same arctic curve as for unconstrained alternating sign matrices. The latter case involves lattice paths that are non-intersecting but that are allowed to have osculating contact points, for which the Tangent Method was argued to still apply. For each problem we estimate the large size asymptotics of a certain one-point function using LU decomposition of the corresponding Gessel-Viennot matrices, and a reformulation of the result amenable to asymptotic analysis.<br />Comment: 63 pages, 13 figures

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.1711.03182
Document Type :
Working Paper
Full Text :
https://doi.org/10.1088/1751-8121/aab3c0