Non-perturbative renormalization of Nf=2+1 QCD with Schroedinger functional scheme

Details Non-perturbative renormalization of Nf=2+1 QCD with Schroedinger functional scheme Non-perturbative renormalization of Nf=2+1 QCD with Schroedinger functional scheme

2008-12-17

arxiv.org/abs/0812.3206v1

PoS LATTICE2008:229,2008

Physics

High Energy Physics

High Energy Physics - Lattice

Comments: 7 Pages, talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg,

Scientific paper

We present a preliminary result of Nf=2+1 QCD running coupling in Schroedinger functional scheme. We adopted Iwasaki gauge action and non-perturbatively improved Wilson fermion action with clover term. We use seven renormalization scales to cover from low energy to high energy perturbative region and three lattice spacings to take the continuum limit at each scale. A scaling behabior of the step scaling function is discussed together with its renoralization group flow in the continuum. We argue on introduction of the physical scale through the Sommer scale r0.

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