文章基本信息

标题：Testing universality and automatic O(a) improvement in massless lattice QCD with Wilson quarks
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作者：S. Sint ; B. Leder
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The chirally rotated Schrödinger functional provides a test bed for universality and automatic O(a) improvement. We here report on extensive quenched simulations of lattice QCD with Wilson quarks in the massless limit. We demonstrate that, after proper tuning of a dimension 3 boundary counterterm, the expected chirally rotated boundary conditions are indeed obtained. This implies automatic O(a) improvement which we then verify in a few examples. Universality of properly renormalized correlation functions is confirmed by comparing to the standard set-up of the Schrödinger functional. As a by-product of this study the non-singlet current renormalisation constants ZA and ZV are obtained from ratios of 2-point functions.