Mass and isospin dependence of the dipole response in a microscopic transport approach Free

The Pygmy Dipole Resonance is studied in the framework of a microscopic transport model based on the Vlasov equation. We derive the dipolar response and extract several informations such as the position of energy centroid and the Energy-Weighted Sum Rule exhausted below the Giant Dipole Resonance, and investigate the role of the symmetry energy. Finally, motivated by the recent experimental interest at facilities such as ELI-NP which demand a more systematic analysis of this mode, we discuss the evolution of these properties with mass and isospin.