1204.0694 (S. Groote et al.)

A numerical test of differential equations for one- and two-loop sunrise
diagrams using configuration space techniques    [PDF]

S. Groote, J. G. Körner, A. A. Pivovarov

We use configuration space methods to write down one-dimensional integral representations for one- and two-loop sunrise diagrams (also called Bessel moments) which we use to numerically check on the correctness of the second order differential equations for one- and two-loop sunrise diagrams that have recently been discussed in the literature.

View original: http://arxiv.org/abs/1204.0694