Self-consistent studies of the dipole response in neutron rich nuclei using realistic potentials. (9th February 2015)

• Record Type: Journal Article
• Authors: Knapp, F; Iudice, N Lo; Veselý, P; Andreozzi, F; De Gregorio, G; Porrino, A
• Is Part Of: Journal of physics. Number 580(2015)
• Page Start: 012055
• Publication Date: 2015-02-09
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/580/1/012055
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The dipole response in neutron rich nuclei is investigated within self-consistent approaches which make direct use of a nucleon-nucleon optimized chiral potential complemented with a density dependent term simulating a three-body force. Hartree-Fock-Bogoliubov plus Tamm-Dancoff and random-phase approximations show that such a potential improves the description of the dipole modes with respect to other realistic interactions. The inclusion of the two-phonon states within an equation of motion method induces a pronounced fragmentation of both giant and pygmy resonances in agreement with recent experiments.