We study the Schr\"odinger functional coupling for lattice Yang-Mills theory coupled to an improved bosonic spinor field, which corresponds to QCD with minus two light flavors. This theory serves as a less costly testcase than QCD for the scaling of the coupling.
@article{arxiv.hep-lat/0110224,
title = {Schr\"odinger functional at N_f=-2},
author = {Bernd Gehrmann and Stefan Kurth and Juri Rolf and Ulli Wolff},
journal= {arXiv preprint arXiv:hep-lat/0110224},
year = {2009}
}