  The scale-dependence of the nucleon-nucleon interaction, which in recent
years has been extensively analysed within the context of chiral effective
field theory, is, in fact, inherent in any potential models constrained by a
fit to scattering data. A comparison between a purely phenomenological
potential and local interactions derived from chiral effective field theory
suggests that--thanks to the ability to describe nucleon-nucleon scattering at
higher energies, as well as the deuteron momentum distribution extracted from
electro-disintegration data--phenomenological potentials are best suited for
the description of nuclear dynamics at the scale relevant to neutron star
matter.
