Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/12461
 Title: The QCD potential at O(1/m) Author: Brambilla, NoraPineda, AntonioSoto Riera, JoanVairo, Antonio Keywords: Teoria de camps (Física)Pertorbació (Dinàmica quàntica)QuarksField theory (Physics)Perturbation (Quantum dynamics)Quarks Issue Date: 2001 Publisher: The American Physical Society Abstract: Within an effective field theory framework, we obtain an expression for the next-to-leading term in the $1/m$ expansion of the singlet $Q{\bar Q}$ QCD potential in terms of Wilson loops, which holds beyond perturbation theory. The ambiguities in the definition of the QCD potential beyond leading order in $1/m$ are discussed and a specific expression for the $1/m$ potential is given. We explicitly evaluate this expression at one loop and compare the outcome with the existing perturbative results. On general grounds we show that for quenched QED and fully Abelian-like models this expression exactly vanishes. Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.63.014023 It is part of: Physical Review D, 2001, vol. 63, núm. 1, p. 14023-1-14023-11 Related resource: http://doi.org/10.1103/PhysRevD.63.014023 URI: http://hdl.handle.net/2445/12461 ISSN: 0556-2821 Appears in Collections: Articles publicats en revistes (Física Quàntica i Astrofísica)

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