Speaker: Silas Beane  (University of New Hampshire)

Title: Few-Nucleon Effective Field Theory with Perturbative Pions

Abstract: 
I will motivate and present a new formulation of effective field 
theory (EFT) for nucleon-nucleon (NN) interactions which treats 
pion interactions perturbatively. As in the original KSW formulation
of EFT with perturbative pions, this new EFT expands around the
nontrivial fixed point corresonding to infinite scattering length.
However, in the new formulation, the effect of the singular tensor
force, which previously caused convergence problems, is absorbed
into contact operators. The utility of this new formulation will
be discussed.