期刊
NUCLEAR PHYSICS B
卷 925, 期 -, 页码 212-251出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2017.10.007
关键词
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资金
- Munich Institute for Astro- and Particle Physics (MIAPP) of the DFG cluster of excellence Origin and Structure of the Universe
We introduce a class of functions which constitutes an obvious elliptic generalization of multiple polylogarithms. A subset of these functions appears naturally in the is an element of-expansion of the imaginary part of the two-loop massive sunrise graph. Building upon the well known properties of multiple polylogarithms, we associate a concept of weight to these functions and show that this weight can be lowered by the action of a suitable differential operator. We then show how properties and relations among these functions can be studied bottom-up starting from lower weights. (C) 2017 The Authors. Published by Elsevier B.V.
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