42 citations · 73 across the 5 of their papers we have counts for
5 papers
On the Invariance of Residues of Feynman Graphs
Isabella Bierenbaum, Richard Kreckel, Dirk Kreimer
We use simple iterated one-loop graphs in massless Yukawa theory and QED to pose the following question: what are the symmetries of the residues of a graph under a permutation of p…
Introduction to the GiNaC Framework for Symbolic Computation within the C++ Programming Language
Christian Bauer, Alexander Frink, Richard Kreckel
The traditional split-up into a low level language and a high level language in the design of computer algebra systems may become obsolete with the advent of more versatile compute…
Parallelization of adaptive MC Integrators---Recent pvegas developments
Richard Kreckel
This paper shortly describes some important changes to the pvegas-code since its first publication. It proceeds with a report on the scaling-behavior that was found on a wide range…
First Results with a new Method for calculating 2-loop Box-Functions
R. Kreckel, D. Kreimer, K. Schilcher
We describe a first attempt to calculate scalar 2-loop box-functions with arbitrary internal masses, applying a novel method proposed in hep-ph/9407234. Four of the eight integrals…
Parallelization of adaptive MC Integrators
Richard Kreckel
Monte Carlo (MC) methods for numerical integration seem to be embarassingly parallel on first sight. When adaptive schemes are applied in order to enhance convergence however, the…