Clover improvement for stout-smeared 2+1 flavour SLiNC fermions: non-perturbative results

Details Clover improvement for stout-smeared 2+1 flavour SLiNC fermions: non-perturbative results Clover improvement for stout-smeared 2+1 flavour SLiNC fermions: non-perturbative results

2008-11-14

arxiv.org/abs/0811.2355v1

PoS LATTICE2008:132,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures, talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg

Scientific paper

We discuss an action 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 coefficient, csw, has to be tuned. We present here preliminary results of a non-perturbative determination of csw using the Schrodinger functional and as a by-product also a determination of the critical hopping parameter. A determination of the renormalisation constant for the local vector current is also given. Comparisons of the results are made with lowest order perturbation theory results.

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