QCD Lambda parameter from Landau-gauge gluon and ghost correlations

A.G. Williams; A. Sternbeck; E.-M. Ilgenfritz; K. Maltman; L. von Smekal; M. Mueller-Preussker

QCD Lambda parameter from Landau-gauge gluon and ghost correlations

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arxiv 1003.1585 v1 pith:SLOP5FXR submitted 2010-03-08 hep-lat

QCD Lambda parameter from Landau-gauge gluon and ghost correlations

A. Sternbeck , E.-M. Ilgenfritz , K. Maltman , M. Mueller-Preussker , L. von Smekal , A.G. Williams This is my paper

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We utilise a recently developed minimal MOM scheme to determine the QCD Lambda parameter from the gluon and ghost propagators in lattice Landau gauge. We discuss uncertainties in the analysis and report our preliminary zero and two flavour results, which are r_0*LambdaMS^{(0)}=0.62(1) and r_0*LambdaMS^{(2)}=0.60(3)(2), with the second error due to an extrapolation uncertainty.

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The large-$N$ Yang--Mills $\Lambda$-parameter from step scaling
hep-lat 2026-07 conditional novelty 6.0

First non-asymptotic-scaling determination of the large-N Yang-Mills Λ-parameter yields √(8t₀)Λ_MS(N=∞) = 0.639(36).