arXiv:hep-lat/9710084·v1·High Energy Physics — Lattice
Resolving Exceptional Configurations
W. Bardeen🇺🇸 · A. Duncan🇺🇸 · E. Eichten🇺🇸 · G. Hockney🇺🇸 · H. Thacker🇺🇸
Abstract
In lattice QCD with Wilson fermions, exceptional configurations arise in the quenched approximation at small quark mass. The origin of these large previously uncontrolled lattice artifacts is identified. A simple well-defined procedure (MQA) is presented which removes the artifacts while preserving the correct continuum limit.
Comments: Talk presented by E. Eichten at Lattice 97, Edinburgh(UK), July97. 6 pages, LaTeX, 1 table, 5 figures