The gradient flow at higher orders in perturbation theory

arXiv (Cornell University)

Abstract

Various results for higher-order perturbative calculations in the gradient-flow formalism are reviewed, including the gradient-flow beta function and the small-flow-time expansion of the hadronic vacuum polarization and the energy-momentum tensor. In addition, the strategy of regions is outlined in order to obtain systematic expansions of gradient-flow integrals, for example at large and small flow times.

Authors 1

1. Robert V. Harlander corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   TTK , RWTH Aachen University Sommerfeldstr. 16 , Aachen , Germany