论文标题
与梯度流的近似伴随QCD的质量异常尺寸的测量
Measurement of the mass anomalous dimension of near-conformal adjoint QCD with the gradient flow
论文作者
论文摘要
质量异常尺寸在su（2）量规理论中确定，并以$ n_f = 2 $，$ 3/2 $，$ 1 $和$ 1/2 $在伴随表示中的$ n_f $ fermions确定，其中一半的风味数量与Majorana Fermana相对应。数值方法基于梯度流。结果显示$ n_f = 2 $，$ 3/2 $和$ 1 $的近似符合性行为。特别强调$ n_f = 2 $，这与标准模型的强烈交互扩展相关，并且已经在以前的几项研究中进行了研究。我们检查该方法是否能够解决该理论的早期结果中的差异。总体而言，基于梯度流的方法可将可靠的结果与先前已知的数值数据产生定性一致性。
The mass anomalous dimension is determined in SU(2) gauge theory coupled to $N_f$ fermions in the adjoint representation for $N_f = 2$, $3/2$, $1$ and $1/2$, where half-integer flavor numbers correspond to Majorana fermions. The numerical method is based on gradient flow. The results show near-conformal behavior for $N_f = 2$, $3/2$ and $1$. Particular emphasis is placed on $N_f = 2$, which is relevant for a strongly interacting extension of the Standard Model and has been studied in several previous investigations. We check whether the method is able to resolve discrepancies in earlier results for this theory. Overall, the method based on the gradient flow delivers reliable results in qualitative agreement with previously known numerical data.
