Publicación: NEARLY PERTURBATIVE LATTICE-MOTIVATED QCD COUPLING WITH ZERO IR LIMIT
Fecha
2018
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JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
Resumen
THE PRODUCT OF THE GLUON DRESSING FUNCTION AND THE SQUARE OF THE GHOST DRESSING FUNCTION IN THE LANDAU GAUGE CAN BE REGARDED TO REPRESENT, APART FROM THE INVERSE POWER CORRECTIONS 1/Q^{2N}, A NONPERTURBATIVE GENERALIZATION A(Q^2) OF THE PERTURBATIVE QCD RUNNING COUPLING A(Q^2)=ALPHA_S(Q^2)/PI. RECENT LARGE VOLUME LATTICE CALCULATIONS FOR THESE DRESSING FUNCTIONS STRONGLY INDICATE THAT SUCH A GENERALIZED COUPLING GOES TO ZERO AS A(Q^2)~Q^2 WHEN THE SQUARED MOMENTA Q^2 GO TO ZERO (Q^2
