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QCD Lambda Parameter from Gradient Flow (2410.17677v1)
Published 23 Oct 2024 in hep-lat and hep-ph
Abstract: Starting from the running coupling in the gradient flow scheme, the QCD Lambda parameter $\Lambda_{\,\overline{!\rm MS!}\;}$ is determined analytically with respect to the reference scale $w_0$ in the pure gauge theory. A key element is the gluon condensate, which, being invariant under RG transformations, establishes a formal relationship between $\Lambda_{\,\overline{!\rm MS!}\;}$ and $w_0$. Good agreement with numerical estimates is found.
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