Lattice QCD is the subfield of particle theory which attempts to solve QCD problems by approximating spacetime with a discrete grid. Once they are put on a grid, these problems can be attacked by a variety of means, most often involving numerical methods on (super-)computers. The approach was invented by OSU's own Ken Wilson in 1974, and has since evolved in to major discipline within particle physics. The OSU group is currently involved with several large-scale numerical simulations aimed at understanding strong and weak interaction properties of heavy and light quarks. Among these is the collaboration which has recently (Feb 1997) been named one of the Department of Energy Grand Challenges.

Pion propagator on one configuration
Wavefunction of a moving pion.
The action density in a cooled configuration