Unquenched Effects and Quark Mass Dependence of Lattice Gluon Propagator in Infrared Region
Unquenched Effects and Quark Mass Dependence of Lattice Gluon Propagator in Infrared Region
复制标题
红外区晶格胶子传播体的未淬灭效应和夸克质量依赖性
DOI：
10.1088/0253-6102/50/1/27
复制
发表时间：
2008
影响因子：
3.1
通讯作者：
Zong Hongshi
中科院分区：
文献类型：
--
作者：
Zhang Yan;Ping Jia;Lue Xiao;Zong Hongshi
本文研究了朗道规范中晶格上的胶子传播子，包括淬灭晶格和未淬灭晶格。我们使用的小的几何尺寸是163 × 32，大的是203 × 64。对于淬火近似，我们对数值结果进行拟合，并给出了稍微不同的拟合值。我们还通过比较两味和三味情况下由两味和三味配置产生的胶子传播子得到了非淬灭效应。对于未淬态，在小夸克质量情况下没有发现明显的夸克质量依赖，但在夸克质量较大的三味情况下发现了明显的夸克质量依赖。
In this paper, the gluon propagator in Landau gauge has been studied on a lattice, including the quenched and the unquenched one. The small geometry size of lattice we use is 163 × 32, and the big one is 203 × 64. For the quenched approximation, we fit the numerical results and give a little different fitting values. We also obtain unquenched effects by comparing the gluon propagator resulting from the quenched and unquenched configurations, for both the two-flavor and three-flavor cases. For the unquenched configurations, an obvious quark mass dependence has not been found in the small quark mass case, but is found in the three-flavor case when the quark mass is big.