Expansion by regions with pySecDec

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

doi:10.1016/j.cpc.2021.108267

Expansion by regions with pySecDec

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

Authors

G. Heinrich

S. Jahn

Dr Stephen Jones stephen.jones@durham.ac.uk
Assistant Professor

M. Kerner

F. Langer

V. Magerya

A. Põldaru

J. Schlenk

E. Villa

Abstract

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.

Citation

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. https://doi.org/10.1016/j.cpc.2021.108267

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
DOI	https://doi.org/10.1016/j.cpc.2021.108267
Related Public URLs	https://arxiv.org/abs/2108.10807v2

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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Statement
© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/