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arXiv 2108.00772hep-phhep-th
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用微分算子约化单圈Feynman积分

One-loop Feynman Integral Reduction by Differential Operators

Chang Hu, Tingfei Li, Xiaodi Li

摘要:

对于环积分,标准方法是约化。一个著名的单圈积分约化方法是帕萨里诺-韦尔特曼约化。受文[1]中求解蝌蚪约化系数的启发,本文证明了同样的方法可用于求解任何单圈积分的完全积分约化。微分算子方法是PV-约化方法的一种改进形式。利用这种方法,可以很容易地由代数递推关系给出主积分的所有约化系数的解析表达式。我们证明我们的方法明确与几个例子。

英文摘要:

For loop integrals, the standard method is reduction. A well-known reduction method for one-loop integrals is the Passarino-Veltman reduction. Inspired by the recent paper [1] where the tadpole reduction coefficients have been solved, in this paper we show the same technique can be used to give a complete integral reduction for any one-loop integrals. The differential operator method is an improved version of the PV-reduction method. Using this method, analytic expressions of all reduction coefficients of the master integrals can be given by algebraic recurrence relation easily. We demonstrate our method explicitly with several examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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