https://doi.org/10.1140/epjc/s10052-011-1626-1
Special Article - Tools for Experiment and Theory
Geometric approach to asymptotic expansion of Feynman integrals
1
Institut für Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT), 76128, Karlsruhe, Germany
2
Scientific Research Computing Center, Moscow State University, 119991, Moscow, Russia
Received:
4
March
2011
Revised:
27
March
2011
Published online:
12
April
2011
We present an algorithm that reveals relevant contributions in non-threshold-type asymptotic expansion of Feynman integrals about a small parameter. It is shown that the problem reduces to finding a convex hull of a set of points in a multidimensional vector space.
Key words: Asymptotic Expansion / Convex Hull / Minkowski Space / Integration Variable / Loop Momentum
© The Author(s) 2011
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