论文标题
确定核子的胶成分
Determining the glue component of the nucleon
论文作者
论文摘要
计算细胞核中动量的GLUON成分是一个困难且计算上昂贵的问题，因为矩阵元素涉及一个夸克线与粘合的Gluon操作员，该操作员患有超紫色的波动。但是，成功确定的也是该操作员的非扰动重新归一化的必要条件。作为第一步，我们在这里调查了RI-MOM方案中的这种重量法化。以淬灭的QCD为例，使用Feynman-Hellmann技术的适应来直接计算中获得统计信号。
Computing the gluon component of momentum in the nucleon is a difficult and computationally expensive problem, as the matrix element involves a quark-line-disconnected gluon operator which suffers from ultra-violet fluctuations. But also necessary for a successful determination is the non-perturbative renormalisation of this operator. As a first step we investigate here this renormalisation in the RI-MOM scheme. Using quenched QCD as an example, a statistical signal is obtained in a direct calculation using an adaption of the Feynman-Hellmann technique.
