文章基本信息

标题：Ghost-gluon coupling power corrections and $\Lambda_{\overline{MS}}$ from twisted-mass lattice QCD at $N_f=2$.
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作者：M. Gravina
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：A non-perturbative calculation of the ghost-gluon running QCD coupling constant is performed using Nf = 2 twisted-mass dynamical fermions. The extraction of LMS in the chiral limit reveals the presence of a non-perturbative OPE contribution that is assumed to be dominated by a dimension-two hA2i condensate. In this contest a novel method for calibrating the lattice spacing in lattice simulations is presented.