Matter and charge radius of 6He in the hyperspherical-harmonics approach

S. Bacca*, N. Barnea, A. Schwenk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

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 nonlocal 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.

Original languageAmerican English
Article number034321
JournalPhysical Review C - Nuclear Physics
Volume86
Issue number3
DOIs
StatePublished - 17 Sep 2012

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