费曼图振幅满足规范不变性方程所需要的条件

THE NECESSARY CONDITION FOR FEYNMAN-AMPLITUDE-SATISFIED GAUGE INVARIANCE EQUATION

本文研究了当光子外线出现在费米子线上时，相应的费文图振幅满足的规范不变性方程所需要的条件及其在标准模型情形下的推广.

We have studied the necessary condition in which the Feynman amplitude satisfies gauge invariance equation,when the external photon line appears on the fermion line. We have studied expansion for standard model as well.