Neutron-rich Helium isotopes based on hyperspherical harmonics

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.

arXiv comment6 pages, 4 figures, proceedings of The 7th International Workshop on Chiral Dynamics, August 6-10 2012, Jefferson Lab, Newport News, Virginia, USA

References in corpus (7)

• Accurate Charge-Dependent Nucleon-Nucleon Potential at Fourth Order of Chiral Perturbation Theory
• State Dependent Effective Interaction for the Hyperspherical Formalism
• First direct mass-measurement of the two-neutron halo nucleus 6He and improved mass for the four-neutron halo 8He
• Matter and charge radius of 6He in the hyperspherical-harmonics approach
• Nuclear polarizability of helium isotopes in atomic transitions
• Helium halo nuclei from low-momentum interactions
• The nuclear electric polarizability of 6He

Cited by in corpus (1)

• Removing center of mass effects in response function and sum rule calculations based on the harmonic oscillator basis