文章基本信息

标题：Quark masses in two-flavor QCD
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作者：M. Creutz
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2011
卷号：2011
期号：QCD-TNT-ll
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Considered as a function of the quark mases, two-flavor QCD depends on three parameters, including one that is CP violating. As themasses vary to unphysical values, regions of both first- and second-order phase transitions are expected. For non-degenerate quarks, non-perturbative effects leave individual quark mass ratios with a renormalization scheme dependence. This complicates matching lattice results with perturbative schemes and clarifies the tautology with attacking the strong CP problem via a vanishing up quark mass.