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Computation of the relation between the bare lattice coupling and the MSbar coupling in SU(N) gauge theories to two loops

Martin Luescher·Peter Weisz
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Abstract

The perturbation expansion of the MSbar coupling in the SU(N) gauge theory in powers of the bare lattice coupling is extended to two-loop order. A discussion of our results has already been published elsewhere. We here describe the calculation in some detail. It relies on the background field technique and a recently introduced coordinate space method to evaluate lattice Feynman integrals.

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Martin Luescher, Peter Weisz. 1995-05-12. Computation of the relation between the bare lattice coupling and the MSbar coupling in SU(N) gauge theories to two loops. https://doi.org/10.1016/0550-3213(95)00338-s

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