论文标题
从一般运动学中的QCD中的Landau-gauge中的三线顶点
Three-gluon vertex in Landau-gauge from quenched-lattice QCD in general kinematics
论文作者
论文摘要
我们报告了来自淬火晶格QCD模拟的三胶元顶顶点的新颖且广泛的晶格QCD分析。使用标准的威尔逊动作，我们已经计算出对对称$（q^2 = r^2 = p^2）$和soft-gluon $（p = 0）$ case的三度运动限制超出通常的运动学限制的三个胶结顶点。所谓的双层外壳$（r^2 = q^2 \ ne p^2）$，其中可以用三个独立的张量来施放横向投影的顶点，这是最近进行的详尽审查的对象，在此通信中也显示了。此外，除此特殊情况外，还提出了具有三个不同平方动量的运动学配置的结果。考虑的所有数据，三胶结顶点的晶格估计值均表现出树级张量形式的明显优势。
We report on a novel and extensive lattice QCD analysis for the three-gluon vertex from quenched lattice-QCD simulations. Using standard Wilson action, we have computed the three-gluon vertex beyond the usual kinematic restriction to the symmetric $(q^2 = r^2 = p^2)$ and soft-gluon $(p = 0)$ cases where it depends on a single momentum scale. The so-dubbed bisectoral case $(r^2 = q^2 \ne p^2)$, where the transversely projected vertex can be cast in terms of three independent tensors, have been the object of a recent exhaustive scrutiny, also shown in this communication. Herein, beyond this special case, results for kinematic configurations with three different squared momenta are also presented. All data considered, the lattice estimate of the three-gluon vertex exhibits a clear dominance of the tree-level tensor form factor.
