期刊
COMPUTER PHYSICS COMMUNICATIONS
卷 181, 期 8, 页码 1352-1361出版社
ELSEVIER
DOI: 10.1016/j.cpc.2010.04.001
关键词
Elementary particle physics; Loop integrations; Infrared divergences
资金
- Ministry of Education, Science, and Culture, Japan [20340063, 21540286]
- Grants-in-Aid for Scientific Research [21540286, 20340063] Funding Source: KAKEN
We propose a new geometric method of IR factorization in sector decomposition. The problem is converted into a set of problems in convex geometry. The latter problems are solved using algorithms in combinatorial geometry. This method provides a deterministic algorithm and never falls into an infinite loop. The number of resulting sectors depends on the algorithm of triangulation. Our test implementation shows smaller number of sectors comparing with other existing methods with iterations. (C) 2010 Elsevier B.V. All rights reserved.
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