Details

Autor(en) / Beteiligte

• de Doncker, E
• Yuasa, F

Titel

Parallel computation of Feynman loop integrals

Ist Teil von

• Journal of physics. Conference series, 2012-01, Vol.402 (1), p.12029-8

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2012

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The need for large numbers of compute-intensive integrals, arising in quantum field theory perturbation calculations, justifies the parallelization of loop integrals. In earlier work, we devised effective multivariate methods by iterated (repeated) adaptive numerical integration and extrapolation, applicable for some problem classes where standard multivariate integration techniques fail through integrand singularities. In repeated integration, the function evaluations for the outer integral are independent integral computations for the next lower level and can be distributed to threads in a multi-core parallelization. The distribution level determines the number of dimensions in the inner integral below it and thus the granularity of the computation. We discuss a multi-threaded implementation over the OpenMP Application Program Interface.