Resurgence of the Tilted Cusp Anomalous Dimension

Abstract

We use resurgent extrapolation and continuation methods to extract detailed analytic information about the tilted cusp anomalous dimension solely from its weak coupling and strong coupling expansions. This enables accurate and smooth interpolation between the weak and strong coupling limits, and identifies the relevant singularities governing the finite radius of convergence of the weak coupling expansion and the asymptotic nature of the strong coupling expansion. The input data is purely perturbative, generated from the BES equations, and these resurgent methods extract accurate non-perturbative information which matches the underlying physical structure.

15 pages, 12 figures

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Cited by in corpus (2)

• Introductory Lectures on Resurgence: CERN Summer School 2024
• Preface to Fields, Gravity, Strings and Beyond: In Memory of Stanley Deser