Running alpha(s) from Landau-gauge gluon and ghost correlations
A. Sternbeck, E.-M. Ilgenfritz, K. Maltman, M. M\"uller-Preussker, L., von Smekal, A. G. Williams
TL;DR
This paper estimates the nonperturbative running coupling constant of strong interactions using lattice QCD in Landau gauge, focusing on ghost-gluon correlations and preliminary results for zero and two-flavour cases.
Contribution
It introduces a method to determine the strong coupling from ghost and gluon dressing functions in Landau gauge within lattice QCD.
Findings
Preliminary results for zero and two-flavour cases.
The method allows defining alpha(s) solely from dressing functions.
Provides insights into nonperturbative strong interactions.
Abstract
We estimate the running coupling constant of the strong interactions within the nonperturbative framework of lattice QCD in Landau gauge. Our calculation is based on the ghost-gluon vertex which in the particular case of Landau gauge allows for a definition of alpha(s) in a MOM scheme solely in terms of the gluon and ghost dressing functions. As a first step we investigate the zero and two-flavour case and report here on preliminary results.
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