DOE Grand Challenge Applications Group in Quantum Chromodynamics

We are using the massively parallel computers at Oak Ridge and Los Alamos national laboratories for numerical simulations of quantum chromodynamics, the fundamental theory of the strong interactions of high energy physics. We have developed a portable MIMD code which runs on the Paragon, CM5, T3D, SP2, workstation clusters and other MIMD machines, and a SIMD code optimized for the CM5, with key sections written in CDPEAC. These codes are being used for computations of the properties of QCD at low and intermediate energies. The main thrust of these computations is matrix elements of strongly interacting particles, including the decay constant of B mesons, pion scattering amplitudes, the kaon B parameter and semi-leptonic form factors.

Work is being carried out by two subgroups:

• The MIMD Lattice Calculation (MILC) Collaboration
• The Los Alamos (LANL) Collaboration

Click on each to view their latest research results.