Programs in Physics & Physical Chemistry
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|Manuscript Title: Introducing SummerTime: a package for high-precision computation of sums appearing in DRA method|
|Authors: Roman N. Lee, Kirill T. Mingulov|
|Program title: SummerTime|
|Catalogue identifier: AEZU_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 203(2016)255|
|Programming language: Wolfram Mathematica.|
|Computer: Any with Wolfram Mathematica installed.|
|Operating system: Any supporting Wolfram Mathematica.|
|RAM: Depending on the complexity of the problem|
|Keywords: Multiloop calculations, DRA method, hypergeometric sums.|
|Classification: 4.4, 4.7, 5.|
Nature of problem:
Arbitrary-precision evaluation of the ε-expansion coefficients of the multiloop integrals obtained via DRA method . Arbitrary-precision evaluation of the Goncharov's polylogarithms and related function.
Multiple nested sums are calculated without nested loops using factorized form of the summand. Slowly convergent sums are treated using convergence acceleration. Required working precision, number of term and similar parameters are determined by automatic analysis of the summand.
Depending on the complexity of the problem, limited by memory and CPU time.
From a few seconds to a few hours, depending on the complexity of the problem.
|||R. Lee, Nuclear Physics B 830 (2010) 474.|
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