Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] adyc_v1_0.tar.gz(11 Kbytes)|
|Manuscript Title: Precise numerical evaluation of the two loop sunrise graph Master Integrals in the equal mass case|
|Authors: S. Pozzorini, E. Remiddi|
|Program title: sunem|
|Catalogue identifier: ADYC_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 175(2006)381|
|Programming language: Fortran 77.|
|Operating system: all.|
|Word size: up to 32|
|Keywords: multi-loop Feynman integrals, differential equations.|
|PACS: 02.30.Hq, 02.30.Mv, 02.60.-x, 12.15.Lk.|
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.
Accelerated power series expansions obtained by solving the differential equations for the MIs at their singular points. With a maximum of 22 terms for the worse case expansion a relative precision of better than a part in 1015 is achieved for arbitrary real values of the momentum transfer.
Limited to real momentum transfer and equal internal masses.
Approximately 1 μs to evaluate the four Master integrals for a fixed momentum transfer value on a Pentium IV/3 GHz Linux PC.
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