Dispersive calculation of the massless multi-loop sunrise diagram

Details Dispersive calculation of the massless multi-loop sunrise diagram Dispersive calculation of the massless multi-loop sunrise diagram

2006-04-16

arxiv.org/abs/hep-th/0604113v3

Lett.Math.Phys.77:209-218,2006

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 1 figure, LATEX, uses kluwer.cls, some references added

Scientific paper

10.1007/s11005-006-0090-6

The massless sunrise diagram with an arbitrary number of loops is calculated in a simple but formal manner. The result is then verified by rigorous mathematical treatment. Pitfalls in the calculation with distributions are highlighted and explained. The result displays the high energy behaviour of the massive sunrise diagrams, whose calculation is involved already for the two-loop case.

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