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Expansion by regions with pySecDec

Heinrich, G.; Jahn, S.; Jones, S.P.; Kerner, M.; Langer, F.; Magerya, V.; Põldaru, A.; Schlenk, J.; Villa, E.

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G. Heinrich

S. Jahn

M. Kerner

F. Langer

V. Magerya

A. Põldaru

J. Schlenk

E. Villa


We discuss the technique of expansion by regions from a geometric perspective, and its implementation within pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The program offers an automated way to perform asymptotic expansions and provides a new mechanism for efficiently evaluating amplitudes, as well as individual integrals. The usage of the new features available within pySecDec is illustrated with several examples.


Heinrich, G., Jahn, S., Jones, S., Kerner, M., Langer, F., Magerya, V., …Villa, E. (2022). Expansion by regions with pySecDec. Computer Physics Communications, 273, Article 108267.

Journal Article Type Article
Acceptance Date Dec 14, 2021
Online Publication Date Jan 4, 2022
Publication Date 2022-04
Deposit Date Feb 23, 2022
Publicly Available Date Jan 4, 2023
Journal Computer Physics Communications
Print ISSN 0010-4655
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 273
Article Number 108267
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