QCD running coupling in the nonperturbative and near-perturbative regimes

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...

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Hauptverfasser: Téramond Peralta, Guy F. de (VerfasserIn) , Paul, Arpon (VerfasserIn) , Brodsky, Stanley J. (VerfasserIn) , Deur, Alexandre (VerfasserIn) , Dosch, Hans Günter (VerfasserIn) , Liu, Tianbo (VerfasserIn) , Sufian, Raza Sabbir (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2024
In: Physical review letters
Year: 2024, Jahrgang: 133, Heft: 18, Pages: 181901-1-181901-8
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.181901
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.133.181901
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.133.181901
Volltext
Verfasserangaben:Guy F. de Téramond, Arpon Paul, Stanley J. Brodsky, Alexandre Deur, Hans Günter Dosch, Tianbo Liu, and Raza Sabbir Sufian (HLFHS Collaboration)

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520 |a 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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