We investigate the low-energy electric-dipole response of \ (^40 Mg\) using a \ (^38 Mg+n+n\) three-body model. This model is implemented using a three-body hyperspherical formalism with an analytically transformed harmonic oscillator basis. In this study, two different neutron–neutron interactions are considered: a scalar Gaussian density-dependent central potential and a more realistic finite-range potential which includes central, spin–orbit, and tensor components. We examine how the electric-dipole response is affected by the choice of the interaction. Abstract Published by the Jagiellonian University 2026 authors
Singh et al. (Tue,) studied this question.