Issue No. 02 - March/April (2004 vol. 6)
Michael Creutz , Brookhaven National Laboratory
<p>Over the past 25 years, the theoretical-particle physicists who practice lattice-gauge theory have become some of the most frequent users of supercomputing cycles-despite much of the community historically regarding the use of computation as somehow intellectually inferior to pure thought. Lattice-gauge theory provides a controlled scheme for studying strong interactions at low energies. In this article, we'll see that the main tools are powerful but demanding algorithms (such as conjugate-gradient sparse-matrix inversions) familiar in other fields. Still-unsolved issues involve the "sign" problem and the basic formulation of parity violation on the lattice. Although we certainly need additional computing capability, we also need new ideas. </p>
quarks, lattice gauge theory, theoretical physics
M. Creutz, "Simulating Quarks," in Computing in Science & Engineering, vol. 6, no. , pp. 80-85, 2004.