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Non-perturbative improvement of stout-smeared three flavour clover fermions

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arxiv 0901.3302 v2 pith:IKBNHGQK submitted 2009-01-21 hep-lat

N. Cundy , M. Göckeler , R. Horsley , T. Kaltenbrunner , A. D. Kennedy , Y. Nakamura , H. Perlt , D. Pleiter
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P. E. L. Rakow A. Schäfer G. Schierholz A. Schiller H. Stüben J. M. Zanotti
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classification hep-lat
keywords cloveractionnon-perturbativecoefficientdeterminationflavourhoppingimprovement
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We discuss a 3-flavour lattice QCD action with clover improvement in which the fermion matrix has single level stout smearing for the hopping terms together with unsmeared links for the clover term. With the (tree-level) Symanzik improved gluon action this constitutes the Stout Link Non-perturbative Clover or SLiNC action. To cancel O(a) terms the clover term coefficient has to be tuned. We present here results of a non-perturbative determination of this coefficient using the Schroedinger functional and as a by-product a determination of the critical hopping parameter. Comparisons of the results are made with lowest order perturbation theory.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Transverse force distributions in the proton from lattice QCD

    hep-lat 2025-02 conditional novelty 5.0 of 10

    Lattice QCD computes the transverse spatial distribution of the colour-Lorentz force on the struck quark in a proton, finding local forces up to about 3 GeV/fm, larger than the QCD string tension.

  2. Renormalisation Group Equations for 2+1 clover fermions

    hep-lat 2025-01 conditional novelty 5.0 of 10

    The authors derive and apply RG equations for the lattice spacing in 2+1 clover fermion QCD, finding only a small quark mass dependence and smoother lattice spacing ratios.

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