详情

原文传递 Taste violations in the scalar correlator in mixed action simulations

题名：	Taste violations in the scalar correlator in mixed action simulations
作者：	/Fermilab;Van de Water, Ruth S.;/Fermilab /Washington U., St. Louis;Laiho, Jack;/Columbia U. /William-Mary Coll.;Aubin, C.;
关键词：	Lattice72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FORECASTING; ISOVECTORS; LATTICE FIELD THEORY; PERTURBATION THEORY; QUARKS; SCALARS; SEAS; UNITARITY; VALENCE
摘要：	We study the behavior of the isovector scalar correlator, which is particularly sensitive to lattice artifacts, using domain-wall valence quarks on a staggered sea (generated by the MILC collaboration). We analyze this according to the prediction from chiral perturbation theory determined by Prelovsek, which indicates that the leading unitarity violations come from taste breaking effects. We show that our data behaves in the way predicted by Prelovsek, thus verifying that the largest contribution to the violations of unitarity which arise at finite lattice spacing can be described by the mixed-action chiral perturbation theory.
总页数：	7pages
报告类型：	科技报告