Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Struktur und Dynamik von Kernen

HK 20.2: Talk

Tuesday, March 20, 2012, 17:00–17:15, P 4

Low density behaviour of nuclear symmetry energy — •Urnaa Badarch and Horst Lenske — Institut für Theoretische Physik, Universität Giessen

The nuclear symmetry energy is a fundamental quantity important for studying the structure of systems as diverse as the atomic nucleus and the neutron star. Considerable efforts have been made to ascertain the symmetry energy and its dependence on nuclear density. The theoretical studies are in agreement in general but differences in detail e.g. at sub- and supra-saturation density. The density behavior of the symmetry energy with respect to charge asymmetric nuclear matter is studied within the density functional derived from Density-Dependent Relativistic Hadron field (DDRH) theory. We explored the genuine contribution of the isovector and isoscalar mesons to the symmetry energy and the isospin dynamics of nuclear matter. The results of our calculation for the isospin dependence of nuclear symmetry energy and the effective pairing interaction in comparison to phenomenological approaches will be presented.