Nonperturbative improvement of stout-smeared three-flavor clover fermions

Cundy, N. and Goeckeler, M. and Horsley, R. and Kaltenbrunner, T. and Kennedy, A. D. and Nakamura, Y. and Perlt, H. and Pleiter, D. and Rakow, P. E. L. and Schaefer, A. and Schierholz, G. and Schiller, A. and Stueben, H. and Zanotti, J. M. (2009) Nonperturbative improvement of stout-smeared three-flavor clover fermions. PHYSICAL REVIEW D, 79 (9): 094507. ISSN 1550-7998,

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Abstract

We discuss a three-flavor 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 nonperturbative clover or SLiNC action. To cancel O(a) terms the clover term coefficient has to be tuned. We present here results of a nonperturbative determination of this coefficient using the Schrodinger functional and as a by-product a determination of the critical hopping parameter. Comparisons of the results are made with lowest order perturbation theory.

Item Type: Article
Uncontrolled Keywords: LATTICE QCD; O(A) IMPROVEMENT; ONE-LOOP; CHIRAL PROPERTIES; IMPROVED GLUON;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 17 Sep 2020 09:02
Last Modified: 17 Sep 2020 09:02
URI: https://pred.uni-regensburg.de/id/eprint/29096

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