文章基本信息

标题：Axion phenomenology and lattice QCD
本地全文：下载
作者：C.Bonati ; M.D'Elia ; M.Mariti 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2016
卷号：256
DOI：10.22323/1.256.0088
语种：English
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The properties of the QCD axion can be studied from the dependence of strong interactions on the $\theta$-parameter. We present a study of the moments of the topological charge for temperatures up to around 600 MeV, obtained by lattice QCD simulations with 2+1 flavors at the physical quark masses. Our numerical results for the topological susceptibility, when compared to the instanton gas calculation, differ both in size and in the temperature dependence. We discuss the implications of these results for axion phenomenology, a comparison with other more recent studies and the prospects for future investigations.