论文标题
Quark-Gluon顶点的软光射极限和红外增强
The soft-gluon limit and the infrared enhancement of the quark-gluon vertex
论文作者
论文摘要
考虑到软葡萄糖限制的最新完整QCD晶格结果，使用了传播器的晶格模拟结果来获取有关传播器的晶格模拟结果的结果。它的包容性导致红外夸克 - 格鲁恩顶点的明显增强。我们还发现，红外区域中夸克 - 基因内核对夸克 - 格鲁恩顶点的相对贡献并不遵循紫外线区域的扰动分析的规则。这表明，对于QCD，基于扰动理论的直觉不适用于整个动量范围。当前工作中开发的框架为所考虑的顶点的所有纵向成分提供了分析表达式。
The Schwinger-Dyson quark equation (SDE) combined with results from lattice simulation for the propagators are used to obtain information on the quark-gluon vertex, taking into account the recent full QCD lattice results for the soft-gluon limit. Its inclusion leads to a clear enhancement of the infrared quark-gluon vertex. We also find that the relative contribution of the quark-ghost kernel to the quark-gluon vertex in the infrared region does not follow the rules from the perturbative analysis of the ultraviolet region. This shows that for QCD the intuition based on perturbation theory does not apply to the full momentum range. The framework developed in the current work provides analytical expressions for all the longitudinal components of vertex taken into account.
