Asymptotics in the bi-Yang-Baxter Sigma Model

2025/01/30 by Meer Ashwinkumar, Ashwinkumar, Meer, Domenico Orlando +5
Computer Science · Mathematics · #Advanced Topics in Algebra #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Matrix Theory and Algorithms #Spectral Theory in Mathematical Physics

paper · pdf · doi:10.48550/arxiv.2501.18458

openalex publication_date 2025/01/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Working in a sector of large charge is a powerful tool to analytically access models that are either strongly coupled or otherwise difficult to solve explicitly. In the context of integrable systems, Volin's method is exactly such a large-charge approach. In this note, we apply this method to the bi-Yang-Baxter deformed SU(2) principal chiral model. Our main result is an explicit expression for the free energy density as an asymptotic expansion. We moreover determine the leading non-perturbative effects both via analytic methods and a resurgence analysis.

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