Symbolic expansion of transcendental functions |
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Authors: | Stefan Weinzierl |
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Affiliation: | Dipartimento di Fisica, Università di Parma, INFN Gruppo Collegato di Parma, 43100 Parma, Italy |
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Abstract: | Higher transcendental function occur frequently in the calculation of Feynman integrals in quantum field theory. Their expansion in a small parameter is a non-trivial task. We report on a computer program which allows the systematic expansion of certain classes of functions. The algorithms are based on the Hopf algebra of nested sums. The program is written in C++ and uses the GiNaC library. |
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