Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Structure and Dynamics of Nuclei V

HK 26.2: Talk

Wednesday, April 1, 2020, 14:30–14:45, J-HS E

Parametrizations of relativistic energy density functionals with tensor couplings — •Stefan Typel¹ and Diana Alvear Terrero² — ¹Technische Universität Darmstadt, Institut für Kernphysik, Darmstadt, Germany — ²Uniwersytet Wrocławski, Instytut Fizyki Teoretycznej, Wrocław, Poland

Many parametrizations of relativistic energy density functionals with minimal nucleon-meson couplings have been developed in the past assuming a dependence of the couplings on the vector density. This approach is extended here by introducing tensor couplings of nucleons to ω and ρ mesons and by considering both vector and scalar density dependencies of the minimal couplings. The parameters of the new effective interactions are found by fitting to properties of finite nuclei. The uncertainties of the observables in the χ² function are determined self-consistently. They allow to characterize the merits and drawbacks of the various parametrizations.

Supported by the Erasmus+ program of the European Union.