Non-perturbative running of the coupling from four flavour lattice QCD with staggered quarks

2010/11/30 by Paula Pérez-Rubio, Pérez-Rubio, Paula, Stefan Sint +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat

paper · pdf · doi:10.48550/arxiv.1011.6580

7 pages, 4 figures, presented at the XXVIII International Symposium on Lattice Field Theory, Lattice 2010

arxiv created 2010/11/30 · arxiv updated 2010/12/01

Abstract

Using the Schrödinger functional (SF) with a single staggered fermion field we calculate the SF coupling in four-flavour QCD for a wide range of energies and lattice sizes up to L/a=16. Preliminary results for the continuum extrapolation of the step-scaling function are presented. To reduce cutoff effects, one-loop \rm O(a) improvement has been implemented. Various cross checks are made possible by the use of two independent sets of lattices with either T=L+a or T=L-a.

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