Using Schroedinger 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 effects. A number of exploratory tests are also performed with the improved action.
@article{arxiv.0710.0471,
title = {Non-perturbative improvement of nHYP smeared Wilson fermions},
author = {Roland Hoffmann and Anna Hasenfratz and Stefan Schaefer},
journal= {arXiv preprint arXiv:0710.0471},
year = {2008}
}
Comments
7 pages, 6 figures, contribution to Lattice 2007, Regensburg, Germany