We discuss the setup and features of a new definition of the running coupling in the Schr\"odinger functional scheme based on the gradient flow. Its suitability for a precise continuum limit in QCD is demonstrated on a set of Nf=2 gauge field ensembles in a physical volume of L~0.4fm.
Cite
@article{arxiv.1308.4559,
title = {Studying the gradient flow coupling in the Schr\"odinger functional},
author = {Patrick Fritzsch and Alberto Ramos},
journal= {arXiv preprint arXiv:1308.4559},
year = {2015}
}
Comments
7 pages, 3 figures. Talk presented at 31st International Symposium on Lattice Field Theory, July 29 - August 3, 2013, Mainz, Germany