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arXiv · 2403.16126

The strong coupling in the nonperturbative and near-perturbative regimes

Guy F. de Teramond·Arpon Paul·Stanley J. Brodsky·Alexandre Deur·Hans Gunter Dosch·Tianbo Liu·Raza Sabbir Sufian
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Abstract

We use analytic continuation to extend the gauge/gravity duality nonperturbative description of the strong force coupling into the transition, near-perturbative, regime where perturbative effects become important. By excluding the unphysical region in coupling space from the flow of singularities in the complex plane, we derive a specific relation between the scales relevant at large and short distances; this relation is uniquely fixed by requiring maximal analyticity. The unified effective coupling model gives an accurate description of the data in the nonperturbative and the near-perturbative regions.

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Guy F. de Teramond, Arpon Paul, Stanley J. Brodsky, Alexandre Deur, Hans Gunter Dosch, Tianbo Liu, Raza Sabbir Sufian. 2024-03-24. The strong coupling in the nonperturbative and near-perturbative regimes. https://arxiv.org/abs/2403.16126

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