Nonperturbative improvement of stout-smeared three-flavor clover fermions
نویسندگان
چکیده
منابع مشابه
Nonperturbative improvement of stout-smeared three-flavor clover fermions
Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom Deutsches Elektronen-Synchrotron DESY, 15738 Zeuthen, Germany Institut für Theoretische Physik, Universität Leipzig, 04109 Leipzig, Germany Theoretical Physics Division, Department of Mathematical Sciences, University of ...
متن کاملNon-perturbative improvement of stout-smeared three flavour clover fermions
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 pre...
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For the Stout Link Non-perturbative Clover (SLiNC) action we determine in one-loop lattice perturbation theory the critical hopping parameter κc and the clover parameter cSW which is needed for O(a) improvement. Performing this calculation off-shell we are also able to compute the non gauge invariant quark field improvement coefficient cNGI . Additionally, we present first results for the renor...
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We extend our previous study of taste-symmetry breaking using HYP-smeared staggered fermions in two ways. First, we improve the statistics of a comparison of unimproved and HYP-smeared staggered fermions on quenched lattices with a ≈ 0.1 fm. This allows us to obtain a signal for all pion tastes, rather than just a subset, and thus to make a complete comparison. In addition, it allows us to diff...
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Using Schrödinger functional techniques, we determine the coefficient of the clover term necessary for non-perturbative O(a) improvement of hypercubic smeared Wilson fermions on a quenched plaquette action background. Unlike for unsmeared Wilson fermions, the resulting clover coefficients are close to the tree–level value even at coarse lattice spacings, indicating the absence of large cutoff e...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.094507