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arXiv · 1809.05776

Discretization effects on renormalized gauge-field Green's functions, scale setting and gluon mass

Ph. Boucaud·F. De Soto·K. Raya·J. Rodríguez-Quintero·S. Zafeiropoulos
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Abstract

The $SU(3)$ gauge-field propagators computed from the lattice have been exhaustively used in the investigation of the low-momentum dynamics of QCD, in a judicious interplay with results from other nonperturbative approaches, and for the extraction of fundamental parameters of QCD like $Λ_{\overline{\rm MS}}$ as well. The impact of the discretization artifacts and their role in the extrapolation of the results to the continuum limit have not been fully understood so far. We report here about a very careful analysis of the physical scaling violation of the Landau-gauge propagators renormalized in MOM scheme and the Taylor coupling, steering us towards an insightful understanding of the effects from discretization artifacts which makes therefore possible a reliable continuum-limit extrapolation.

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Ph. Boucaud, F. De Soto, K. Raya, J. Rodríguez-Quintero, S. Zafeiropoulos. 2018-09-15. Discretization effects on renormalized gauge-field Green's functions, scale setting and gluon mass. https://doi.org/10.1103/physrevd.98.114515

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