The scalar spectrum of many- flavour QCD
The scalar spectrum of many- flavour QCD
复制标题
多味 QCD 的标量谱
DOI：
10.1142/9789814566254_0009
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
T. Yamazaki
中科院分区：
文献类型：
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作者：
Y. Aoki;T. Aoyama;M. Kurachi;T. Maskawa;K.- i. Nagai;H. Ohki;E. Rinaldi;A. Shibata;K. Yamawaki;T. Yamazaki
LatKMI合作小组正在系统地研究Nf= 4,8,12,16 SU(3)规范理论的动力学性质，使用（HISQ）交错费米子的晶格模拟。探索多味QCD的光谱，以及它在手性极限附近的缩放，是强制性的，以确定这些模型中的一个是否实现了行走的彩色场景。虽然研究介子谱的晶格技术已经发展得很好，但标量风味单重态的确定仍然需要额外的努力。此外，胶子观测通常需要大统计量的模拟和强大的降噪技术。在下面，我们提出了有用的光谱方法来研究标量胶球和标量风味单重介子，以及来自LatKMI合作的Nf= 12 QCD中的标量光谱的现状。
The LatKMI collaboration is studying systematically the dynamical properties of Nf= 4, 8, 12, 16 SU(3) gauge theories using lattice simulations with (HISQ) staggered fermions. Exploring the spectrum of many-flavour QCD, and its scaling near the chiral limit, is mandatory in order to establish if one of these models realises the Walking Technicolor scenario. Although lattice technologies to study the mesonic spectrum are well developed, scalar flavour-singlet states still require extra effort to be determined. In addition, gluonic observables usually require large-statistic simulations and powerful noise-reduction techniques. In the following, we present useful spectroscopic methods to investigate scalar glueballs and scalar flavour-singlet mesons, together with the current status of the scalar spectrum in Nf= 12 QCD from the LatKMI collaboration.