文章基本信息

标题：Operator product expansion and quark condensate from LQCD in coordinate space
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作者：V. Gimenez ; V. Lubicz ; F. Mescia 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We perform an exploratory study of the operator product expansion of the quark propagator on the lattice at short distance in coordinate space. This permits a simple determination of the quark condensate, hy¯yiMS(2GeV)=􀀀(2655stat22syst MeV)3, and of the renormalization constant of the quark eld, ZMS y (2GeV) = 0:8710:003stat0:020syst . This new method also provides a remarkable non-perturbative test of the OPE predictions at short distance in QCD.