First-principles calculations for the strong interactions?

Tom DeGrand

Department of Physics, University of Colorado.

Particle physicists would like to understand how bound states of quarks and gluons work, both for themselves and as a part of the general problem of testing the Standard Model. ``Lattice QCD'' is a mix of analytic and numerical techniques for studying these problems working directly from the Lagrangian. I will give an overview of the field: why we do what we do, a little bit about how we do it, and some stories about what we have learned (and what we have not learned) about the strong interactions.