Landau规范Yang-Mills理论中的四胶子顶点和运行耦合
The four-gluon vertex and the running coupling in Landau gauge Yang-Mills theory
摘要：
本文总结了朗道规范SU（$N_c$）Yang-Mills理论中四胶子顶点的运行耦合的结果，这些结果是由顶点和胶子传播子的dressing函数的组合给出的.这些功能已被确定从相应的一组戴森-Schwinger方程的数值。在红外，我们得到了一个非平凡的红外不动点，它比相应的一个在鬼胶子顶点的耦合小三个数量级。
英文摘要：
We summarise results for the running coupling from the four-gluon vertex in Landau gauge, SU($N_c$) Yang-Mills theory as given by a combination of dressing functions of the vertex and the gluon propagator. These functions have been determined numerically from the corresponding set of Dyson-Schwinger equations. In the infrared we obtain a nontrivial infrared fixed point which is three orders of magnitude smaller than the corresponding one in the coupling of the ghost-gluon vertex.
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