论文标题
Schwinger-Dyson方程的大规模扩展
Screened massive expansion of Schwinger-Dyson equations
论文作者
论文摘要
Schwinger-Dyson方程提供了筛选的大规模扩展的一般形式推导。阐明了一些已知的扩展问题，并建立了一个更一般的框架，以将方法的自然扩展到两环或未直接由生成功能直接定义的幅度。例如，为有效的仪表参数独立于Gluon传播器提供了一环筛分的扩展，该膨胀源是由捏技术产生的。
A general formal derivation of the screened massive expansion is provided by Schwinger-Dyson equations. Some known issues of the expansion are clarified and a more general framework is established for a natural extension of the method to two-loop or to amplitudes which are not directly defined by a generating functional. For instance, a one-loop screened expansion is given for the effective gauge-parameter-independent gluon propagator which arises from the pinch-technique.
