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Expansion by regions with pySecDec

Heinrich, G. and Jahn, S. and Jones, S.P. and Kerner, M. and Langer, F. and Magerya, V. and Põldaru, A. and Schlenk, J. and Villa, E. (2022) 'Expansion by regions with pySecDec.', Computer Physics Communications, 273 . p. 108267.


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.

Item Type:Article
Full text:Publisher-imposed embargo until 04 January 2023.
(AM) Accepted Manuscript
Available under License - Creative Commons Attribution Non-commercial No Derivatives 4.0.
File format - PDF
Publisher Web site:
Publisher statement:© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Date accepted:14 December 2021
Date deposited:23 February 2022
Date of first online publication:04 January 2022
Date first made open access:04 January 2023

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