Non-perturbative improvement of stout-smeared three flavour clover fermions
High Energy Physics - Lattice
2009-07-30 v2
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.
Keywords
Cite
@article{arxiv.0901.3302,
title = {Non-perturbative improvement of stout-smeared three flavour clover fermions},
author = {N. Cundy and M. Göckeler and R. Horsley and T. Kaltenbrunner and A. D. Kennedy and Y. Nakamura and H. Perlt and D. Pleiter and P. E. L. Rakow and A. Schäfer and G. Schierholz and A. Schiller and H. Stüben and J. M. Zanotti},
journal= {arXiv preprint arXiv:0901.3302},
year = {2009}
}
Comments
30 pages, 13 figures, minor changes, published version