Two-loop three-gluon vertex in the zero-momentum limit

Two-loop three-gluon vertex in the zero-momentum limit
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零动量极限中的二环三胶子顶点

DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
O. Tarasov
O. Tarasov
中科院分区：
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文献类型：
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作者：
A. I. Davydychev;P. Osland;O. Tarasov

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被引文献

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在任意协变规范下，在其中一个外动量消失的极限下，计算了双环三胶子顶点。讨论了与此极限相关的微分Ward-Slavnov-Taylor恒等式，得到了鬼胶子顶点和两点函数的相关结果。它们与微分WST恒等式一起，为计算三胶子顶点提供了另一种独立的方法。对所得结果进行了重整化处理。
The two-loop three-gluon vertex is calculated in an arbitrary covariant gauge, in the limit when one of the external momenta vanishes. The differential Ward-Slavnov-Taylor (WST) identity related to this limit is discussed, and the relevant results for the ghost-gluon vertex and two-point functions are obtained. Together with the differential WST identity, they provide another independent way for calculating the three-gluon vertex. The renormalization of the results obtained is also presented.