Arctic curves for paths with arbitrary starting points: a tangent method approach

作者:Di Francesco Philippe*; Guitter Emmanuel
来源:Journal of Physics A-Mathematical and Theoretical, 2018, 51(35): 355201.
DOI:10.1088/1751-8121/aad028

摘要

We use the tangent method of Colomo and Sportiello to investigate the arctic curve in a model of non-intersecting lattice paths with arbitrary fixed starting points aligned along some boundary and whose distribution is characterized by some arbitrary piecewise differentiable function. We find that the arctic curve has a simple explicit parametric representation depending of this function, providing us with a simple transform that maps the arbitrary boundary condition to the arctic curve location. We discuss generic starting point distributions as well as particular freezing ones which create additional frozen domains adjacent to the boundary, hence new portions for the arctic curve. A number of examples are presented, corresponding to both generic and freezing distributions. Our results corroborate already known expressions obtained by more involved methods based on bulk correlations, hence providing more evidence to the validity of the tangent method.

  • 出版日期2018-8-31
  • 单位中国地震局