Acceleration of Feynman loop integrals in high-energy physics on many core GPUs

The current and future colliders in high-energy physics require theorists to carry out a large scale computation for a precise comparison between experimental results and theoretical ones. In a perturbative approach several methods to evaluate Feynman loop integrals which appear in the theoretical c...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2013-08, Vol.454 (1), p.12081-7
Main Authors: Yuasa, F, Ishikawa, T, Hamaguchi, N, Koike, T, Nakasato, N
Format: Article
Language:English
Subjects:
Acceleration
Boards
Computation
Cross sections (physics)
Extrapolation
High energy physics
Integrals
Mathematical analysis
Mathematical models
Numerical analysis
Numerical integration
Numerical methods
Parameters
Physics
Topology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The current and future colliders in high-energy physics require theorists to carry out a large scale computation for a precise comparison between experimental results and theoretical ones. In a perturbative approach several methods to evaluate Feynman loop integrals which appear in the theoretical calculation of cross-sections are well established in the one-loop level, however, more studies are necessary for higher-order levels. Direct Computation Method (DCM) is developed to evaluate multi-loop integrals. DCM is based on a combination of multidimensional numerical integration and extrapolation on a sequence of integrals. It is a fully numerical method and is applicable to a wide class of integrals with various physics parameters. The computation time depends on physics parameters and the topology of loop diagrams and it becomes longer for the two-loop integrals. In this paper we present our approach to the acceleration of the two-loop integrals by DCM on multiple GPU boards.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/454/1/012081