出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:The Symanzik analysis of correlators in lattice QCD with maximally twisted Wilson fermions
reveals that there exist cutoff artifacts which tend to become large as the quark mass gets small.
We show that these effects can be reduced to a negligible level by either introducing the clover
term in the action or, as already suggested in the literature, by a suitable choice of the critical
mass. Recent simulation data support these conclusions.