Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2010-10-27
Physics
High Energy Physics
High Energy Physics - Lattice
7 pages, 4 figures, XXVIII International Symposium on Lattice Field Theory 2010
Scientific paper
A non-perturbative calculation of the ghost-gluon running QCD coupling constant is performed using $N_f=2$ twisted-mass dynamical fermions. The extraction of $\Lambda_{\bar{MS}}$ in the chiral limit reveals the presence of a non-perturbative OPE contribution that is assumed to be dominated by a dimension-two $\VEV{A^2}$ condensate. In this contest a novel method for calibrating the lattice spacing in lattice simulations is presented.
Blossier Benoit
Boucaud Ph.
Gravina Mario
Morenas Vincent
Pene Olivier
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