Precise numerical evaluation of the two loop sunrise graph Master Integrals in the equal mass case

Published: 1 September 2006| Version 1 | DOI: 10.17632/x9792yv6zv.1
Contributors:
S. Pozzorini,
E. Remiddi

Description

Abstract We present a double precision routine in Fortran for the precise and fast numerical evaluation of the two Master Integrals (MIs) of the equal mass two-loop sunrise graph for arbitrary momentum transfer in d = 2 and d = 4 dimensions. The routine implements the accelerated power series expansions obtained by solving the corresponding differential equations for the MIs at their singular points. With a maximum of 22 terms for the worst case expansion a relative precision of better than a part in ... Title of program: sunem Catalogue Id: ADYC_v1_0 Nature of problem Numerical evaluation of the two Master Integrals of the equal mass two-loop sunrise Feynman graph for arbitrary momentum transfer in d = 2 and d = 4 dimensions. Versions of this program held in the CPC repository in Mendeley Data ADYC_v1_0; sunem; 10.1016/j.cpc.2006.05.005 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

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Computational Physics, Computational Method

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