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Determination of the Static Potential with Dynamical Fermions

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arxiv 1012.3037 v3 pith:ZPBJMYLC submitted 2010-12-14 hep-lat hep-ph

Michael Donnellan , Francesco Knechtli , Björn Leder , Rainer Sommer This is my paper · ORCID
classification hep-lathep-ph
keywords potentialstaticdynamicalloopstechniquewilsonanti-quarkapplications
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We present in detail a technique to extract the potential between a static quark and anti-quark pair from Wilson loops measured on dynamical configurations. This technique is based on HYP smearing and leads to an exponential improvement of the noise-to-signal ratio of Wilson loops. We explain why the correct continuum potential is obtained and show numerical evidence that the cut-off effects are small. We present precise results for the non-perturbative potential. As applications, we determine the scale r_0/a and study the shape of the static potential in the range of distances around r_0, where it can be compared with phenomenological potential models.

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Cited by 2 Pith papers

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  1. Hybrid static potentials and gluelumps on $N_f=3+1$ ensembles

    hep-lat 2025-01 conditional novelty 6.0 of 10

    New lattice QCD measurements of hybrid static potentials, static-light thresholds, and gluelump masses on N_f=3+1 ensembles with pions near 420 MeV, using Laplace trial states.

  2. The determination of potential scales in 2+1 flavor QCD

    hep-lat 2024-12 conditional novelty 5.0 of 10

    A new lattice QCD determination of the hadronic scales r0 = 0.4729(75) fm and r1 = 0.3127(40) fm in 2+1 flavor QCD, together with r0 Λ_MSbar^(3) = 0.820(28).

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