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Particles 2018, 1(1), 3-22; https://doi.org/10.3390/particles1010002

Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings

1
Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
2
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
Received: 16 January 2018 / Revised: 29 January 2018 / Accepted: 30 January 2018 / Published: 2 February 2018
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Abstract

Relativistic mean-field models are successfully used for the description of finite nuclei and nuclear matter. Approaches with density-dependent meson-nucleon couplings assume specific functional forms and a dependence on vector densities in most cases. In this work, parametrizations with a larger sample of functions and dependencies on vector and scalar densities are investigated. They are obtained from fitting properties of finite nuclei. The quality of the description of nuclei and the obtained equations of state of symmetric nuclear matter and neutron matter below saturation are very similar. However, characteristic nuclear matter parameters, the equations of state and the symmetry energy at suprasaturation densities show some correlations with the choice of the density dependence and functional form of the couplings. Conditions are identified that can lead to problems for some of the parametrizations. View Full-Text
Keywords: relativistic mean-field model; density-dependent coupling; equation of state; nuclear matter parameter; symmetry energy relativistic mean-field model; density-dependent coupling; equation of state; nuclear matter parameter; symmetry energy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Typel, S. Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings. Particles 2018, 1, 3-22.

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