Harmonic sums and polylogarithms generated by cyclotomic polynomials
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Publication:2851745
DOI10.1063/1.3629472zbMATH Open1272.81127arXiv1105.6063OpenAlexW3100815285MaRDI QIDQ2851745
Author name not available (Why is that?)
Publication date: 2 October 2013
Published in: (Search for Journal in Brave)
Abstract: The computation of Feynman integrals in massive higher order perturbative calculations in renormalizable Quantum Field Theories requires extensions of multiply nested harmonic sums, which can be generated as real representations by Mellin transforms of Poincar'e--iterated integrals including denominators of higher cyclotomic polynomials. We derive the cyclotomic harmonic polylogarithms and harmonic sums and study their algebraic and structural relations. The analytic continuation of cyclotomic harmonic sums to complex values of is performed using analytic representations. We also consider special values of the cyclotomic harmonic polylogarithms at argument , resp., for the cyclotomic harmonic sums at , which are related to colored multiple zeta values, deriving various of their relations, based on the stuffle and shuffle algebras and three multiple argument relations. We also consider infinite generalized nested harmonic sums at roots of unity which are related to the infinite cyclotomic harmonic sums. Basis representations are derived for weight {sf w = 1,2} sums up to cyclotomy {sf l = 20}.
Full work available at URL: https://arxiv.org/abs/1105.6063
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