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

Abstract

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.

30 pages, 13 figures, minor changes, published version

References in corpus (4)

• Accelerating Dynamical Fermion Computations using the Rational Hybrid Monte Carlo (RHMC) Algorithm with Multiple Pseudofermion Fields
• Tuning for Three-flavors of Anisotropic Clover Fermions with Stout-link Smearing
• Rationale for UV-filtered clover fermions
• Perturbative determination of $c_{SW}$ for plaquette and Symanzik gauge action and stout link clover fermions

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