5th International Symposium on Nuclear Symmetry Energy NuSYM15, June 29 - July 2, 2015 Kraków, POLAND

Attila J. Krasznahorkay
ATOMKI, Hungarian Academy of Sciences Debrecen, HUNGARY

Neutron-skin thickness and symmetry-energy constrains from the study of the anti-analog giant dipole resonance

The energy of the charge-exchange anti-analogue giant dipole resonance (AGDR) has been calculated using the state-of-the-art fully self-consistent relativistic proton–neutron quasiparticle random-phase approximation based on the relativistic Hartree–Bogoliubov model. It is shown that the AGDR centroid energy is very sensitively related to the corresponding neutron-skin thickness. The AGDR excitation energy has also been used to calculate the symmetry energy at saturation and the slope of the symmetry energy, resulting in more stringent constraints than most of the previous studies.