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arXiv 1004.5490hep-ph
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基于计算几何的扇区分解

Sector decomposition via computational geometry

Toshiaki Kaneko, Takahiro Ueda

摘要:

针对扇形分解法的分解步骤,提出了一种非迭代的方法,将红外发散部分从环路积分中分离出来。这种方法是基于多项式的渐近行为的分类。将问题转化为欧氏空间中凸体的问题。它们是用计算几何中的算法来解决的。一个测试实现表明,该方法产生的分解扇区数比通常的迭代扇区分解少。

英文摘要:

A non-iterative method is presented for the factorization step of sector decomposition method, which separates infrared divergent part from loop integration. This method is based on a classification of asymptotic behavior of polynomials. The problem is converted to ones for convex body in Euclidean space. They are solved with algorithms developed in computational geometry. A test implementation shows that this method produces less number of decomposed sectors than usual iterative sector decompositions.

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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