arXiv:0705.4660·v3·High Energy Physics — Lattice
Unquenching effects on the coefficients of the Lüscher-Weisz action
Zh. Hao🇨🇦 · G. M. von Hippel🇨🇦 · R. R. Horgan🇬🇧 · Q. J. Mason🇬🇧 · H. D. Trottier (HPQCD collaboration)🇨🇦
Abstract
The effects of unquenching on the perturbative improvement coefficients in the Symanzik action are computed within the framework of Lüscher-Weisz on-shell improvement. We find that the effects of quark loops are surprisingly large, and their omission may well explain the scaling violations observed in some unquenched studies.
Comments: 7 pages, 5 figures, uses revtex4; version to appear in Phys.Rev.D