News on the equation of state from heavy ion reactions

14th Conference on Theoretical Nuclear Physics in Italy

Colonna, M.^1 ; Baran, V.^2 ; Di Toro, M.^1,3

Laboratori Nazionali Del Sud, INFN, via Santa Sofia 62, I-95123, Catania, Italy^1

Physics Faculty, University of Bucharest, Romania^2

Physics-Astronomy Department, University of Catania, Italy^3

关键词: Density dependence;    Effective interactions;    Extracting information;    Heavy-ion reactions;    Interaction channel;    Intermediate energies;    Nuclear symmetry energy;    Theoretical framework;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/527/1/012009/pdf
DOI  :  10.1088/1742-6596/527/1/012009

来源: IOP

【 摘 要 】

We discuss recent results on heavy ion reactions between charge asymmetric systems, from low up to intermediate energies. The theoretical framework is provided by mean- field based transport approaches. We focus on isospin sensitive observables, aiming at extracting information on the density dependence of the isovector part of the nuclear effective interaction and of the nuclear symmetry energy. For reactions close to the Coulomb barrier, we explore the structure of collective dipole oscillations, rather sensitive to the low-density behavior of the symmetry energy. At intermediate energies, where regions with higher density and momentum are reached, we discuss collective flows and their sensitivity to the momentum dependence of the isovector interaction channel, which determines the splitting of neutron and proton effective masses.