Argonne Physics Division Colloquium - 5 Feb 2010

11:00 AM, Building 203 auditorium

Ab initio calculations of nuclei treat a nucleus as a system of *A*
nucleons interacting by realistic two- (*NN*) and three-nucleon
(*NNN*) forces. Variational Monte Carlo (VMC) followed by Green's
function Monte Carlo (GFMC) is a very successful combination for
light nuclei. Both increasing computer power and new or improved
algorithms have resulted in steady progress in applying this approach
to larger nuclei and we now get excellent scalability up to
131,000 cores on Argonne's IBM Blue Gene/P. With the Argonne v_{18} *NN*
and Illinois *NNN* potentials, we obtain an excellent description of the
properties of nuclei up to *A* = 12. I will describe these methods, and
present recent advances in using the largest computers and some recent
results.

Argonne Physics Division Colloquium Schedule