Simulation of QCD with N ^sub f^ = 2 + 1 flavors of non-perturbatively improved Wilson fermions

Abstract We describe a new set of gauge configurations generated within the CLS effort. These ensembles have N ^sub f^ = 2 + 1 flavors of non-perturbatively improved Wilson fermions in the sea with the Lüscher-Weisz action used for the gluons. Open boundary conditions in time are used to address the...

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Bibliographic Details
Published in:The journal of high energy physics 2015-02, Vol.2015 (2), p.1
Main Authors: Bruno, Mattia, Djukanovic, Dalibor, Engel, Georg P, Francis, Anthony, Herdoiza, Gregorio, Horch, Hanno, Korcyl, Piotr, Korzec, Tomasz, Papinutto, Mauro, Schaefer, Stefan, Scholz, Enno E, Simeth, Jakob, Simma, Hubert, Söldner, Wolfgang
Format: Article
Language:English
Subjects:
High energy physics
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Summary:Abstract We describe a new set of gauge configurations generated within the CLS effort. These ensembles have N ^sub f^ = 2 + 1 flavors of non-perturbatively improved Wilson fermions in the sea with the Lüscher-Weisz action used for the gluons. Open boundary conditions in time are used to address the problem of topological freezing at small lattice spacings and twisted-mass reweighting for improved stability of the simulations. We give the bare parameters at which the ensembles have been generated and how these parameters have been chosen. Details of the algorithmic setup and its performance are presented as well as measurements of the pion and kaon masses alongside the scale parameter t ^sub 0^.
ISSN:1029-8479
DOI:10.1007/JHEP02(2015)043