arXiv:0904.2823·v1·High Energy Physics — Phenomenology
Numerical Evaluation of Feynman Integrals by a Direct Computation Method
F. Yuasa🇯🇵 · T. Ishikawa🇯🇵 · J. Fujimoto🇯🇵 · N. Hamaguchi🇯🇵 · E. de Doncker🇺🇸 · Y. Shimizu🇯🇵
Abstract
A purely numerical method, Direct ComputationMethod is applied to evaluate Feynman integrals. This method is based on the combination of an efficient numerical integration and an efficient extrapolation. In addition, high-precision arithmetic and parallelization technique can be used in this method if required. We present the recent progress in development of this method and show results such as one-loop 5-point and two-loop 3-point integrals.
Comments: 5 pages,9 figures, LaTeX, PoS style; ACAT2008, XII International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Erice, Sicily, Italy November 3-7, 2008