Explicit closed algebraic formulas for Orlov–Scherbin n-point functions

Open Access
Authors
  • B. Bychkov
  • P. Dunin-Barkowski
  • M. Kazarian
  • S. Shadrin ORCID logo
Publication date 2022
Journal Journal de l'Ecole Polytechnique - Mathematiques
Volume | Issue number 9
Pages (from-to) 1121-1158
Organisations
  • Faculty of Science (FNWI) - Korteweg-de Vries Institute for Mathematics (KdVI)
Abstract We derive a new explicit formula in terms of sums over graphs for the n-point correlation functions of general formal weighted double Hurwitz numbers coming from the Kadomtsev–Petviashvili tau functions of hypergeometric type (also known as Orlov–Scherbin partition functions). Notably, we use the change of variables suggested by the associated spectral curve, and our formula turns out to be a polynomial expression in a certain small set of formal functions defined on the spectral curve.
Document type Article
Language English
Published at https://doi.org/10.5802/jep.202
Other links https://www.scopus.com/pages/publications/85135869113
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