Mateusz Piorkowski: Algebraic equations for arctic curves of the periodic Aztec diamond

Date: 2024-10-09

Time: 14:00 - 15:00

Zoom link: https://kva-se.zoom.us/j/9217561880

Speaker

Mateusz Piorkowski. KTH Royal Institut of Technology

Abstract

In this talk I discuss arctic curves of the kxl-periodic Aztec diamond recently studied by Berggren & Borodin ’23 (arXiv:2306.07482). Polynomial equations for these arctic curves are obtained using theta function of the associated spectral curve. As a corollary we determine the degree of arctic curves in terms of the number of smooth and frozen regions of the underlying model.

The key to this result is a generalization of the classical discriminant of a polynomial to the setting of meromorphic sections on compact Riemann surfaces.