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arxiv: 1611.07221 · v1 · pith:A557Y5BVnew · submitted 2016-11-22 · ✦ hep-lat · hep-ph· hep-th

Perturbative running of the twisted Yang-Mills coupling in the gradient flow scheme

classification ✦ hep-lat hep-phhep-th
keywords flowcouplinggradientperturbativeyang-millscomputationfiniterunning
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We report on our ongoing computation of the perturbative running of the Yang-Mills coupling using gradient flow techniques. In particular, we use the gradient flow method with twisted boundary conditions to perform a perturbative expansion of the expectation value of the Yang-Mills energy density up to fourth order in the coupling at finite flow time. We regularise the resulting integrals using dimensional regularisation, and reproduce the universal coefficient of the 1/{\epsilon} term in the relation between bare and renormalised couplings. The computation of the finite part leading to a determination of the {\Lambda} parameter in this scheme is underway.

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