Matter and charge radius of 6He in the hyperspherical-harmonics approach
Abstract
We present ab-initio calculations of the binding energy and radii of the two-neutron halo nucleus 6He using two-body low-momentum interactions based on chiral effective field theory potentials. Calculations are performed via a hyperspherical harmonics expansion where the convergence is sped up introducing an effective interaction for non-local potentials. The latter is essential to reach a satisfactory convergence of the extended matter radius and of the point-proton radius. The dependence of the results on the resolution scale is studied. A correlation is found between the radii and the two-neutron separation energy. The importance of three-nucleon forces is pointed out comparing our results and previous calculations to experiment.
Keywords
Cite
@article{arxiv.1202.0516,
title = {Matter and charge radius of 6He in the hyperspherical-harmonics approach},
author = {S. Bacca and N. Barnea and A. Schwenk},
journal= {arXiv preprint arXiv:1202.0516},
year = {2015}
}
Comments
8 pages, 6 figures, minor changes, published version