Tree-tubings and the combinatorics of resurgent Dyson-Schwinger equations

Autor:	Borinsky, Michael, Dunne, Gerald V., Yeats, Karen
Rok vydání:	2024
Předmět:	Mathematical Physics High Energy Physics - Theory Mathematics - Combinatorics
Druh dokumentu:	Working Paper
Popis:	We give a novel combinatorial interpretation to the perturbative series solutions for a class of Dyson-Schwinger equations. We show how binary tubings of rooted trees with labels from an alphabet on the tubes, and where the labels satisfy certain compatibility constraints, can be used to give series solutions to Dyson-Schwinger equations with a single Mellin transform which is the reciprocal of a polynomial with rational roots, in a fully combinatorial way. Further, the structure of these tubings leads directly to systems of differential equations for the anomalous dimension that are ideally suited for resurgent analysis. We give a general result in the distinct root case, and investigate the effect of repeated roots, which drastically changes the asymptotics and the transseries structure. Comment: 22 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2408.15883 Zobrazit plný text záznamu View this record from Arxiv