扇区分解
Sector Decomposition
摘要:
扇形分解是微扰量子场论中分离参数积分发散的一种构造性方法。我们详细解释了一般算法,并回顾其应用于多圈Feynman参数积分以及红外发散相空间积分实辐射矩阵元。
英文摘要:
Sector decomposition is a constructive method to isolate divergences from parameter integrals occurring in perturbative quantum field theory. We explain the general algorithm in detail and review its application to multi-loop Feynman parameter integrals as well as infrared divergent phase-space integrals over real radiation matrix elements.
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