Nuclear Physics without High-Momentum Potentials: Direct Construction of the Effective Interaction from Scattering Observables
arXiv:1607.06863
Abstract
The standard approach to nuclear physics encodes phase shift information in an NN potential, then decodes that information in forming an effective interaction, appropriate to a low-momentum Hilbert space. Here we show that it is instead possible to construct the effective interaction directly from continuum phase shifts and mixing angles, eliminating all reference to a high momentum potential. The theory is rapidly convergent and well behaved, yielding sub-keV accuracy.
5 pages, 3 figures