Neutron-rich Helium isotopes based on hyperspherical harmonics

TL;DR

This paper applies the hyperspherical harmonics method to study neutron-rich helium isotopes, calculating properties like binding energy, radii, and polarizability, and compares results with experimental data.

Contribution

It demonstrates the application of hyperspherical harmonics to neutron-rich helium isotopes, including 6He and 8He, with calculations of ground and excited state properties using chiral and semi-realistic interactions.

Findings

Calculated binding energy and radii for 6He agree with experimental data.

Explored the applicability of the method to 8He.

Computed electric polarizability of 6He with semi-realistic potentials.

Abstract

We present recent results for neutron-rich Helium isotopes obtained from the hyperspherical harmonics method. Ground-state properties, like the binding energy and the point-proton radius are shown for the two-neutron halo nucleus 6He using two-body low-momentum interactions derived from chiral forces. The applicability of the method to the four-neutron halo nucleus 8He is discussed. As an excited-state observable we present a recent calculation of the nuclear electric polarizability of $^6$He from a semi-realistic potential. A comparison of the calculated quantities to experimental data is performed.