Physics Division Colloquium - 25 May 2001

Modern effective field theory methods can be used for high-precision
calculations of non-relativistic bound states, such as Hydrogen and
Positronium. The energy levels of Hydrogen can be computed to one part in
10^{12}. The same techniques can also be applied to QCD, where the QCD Lamb
shift was computed for the first time. There are some promising ideas on
applying the method to the problem of nuclear forces.

ANL Physics Division Colloquium Schedule