Beta Function and Anomalous Dimensions

Preprint number: CP3-Origins-2010-50
Authors: Claudio Pica (CP3-Origins) and Francesco Sannino (CP3-Origins)
External link: arXiv.org

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We demonstrate that it is possible to determine the coefficients of an all-order beta function linear in the anomalous dimensions using as data the two-loop coefficients together with the first one of the anomalous dimensions which are universal. The beta function allows to determine the anomalous dimension of the fermion masses at the infrared fixed point, and the resulting values compare well with the lattice determinations.