Model nuclear energy density functionals derived from ab initio calculations

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http://hdl.handle.net/10138/321081

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Salvioni , G , Dobaczewski , J , Barbieri , C , Carlsson , G , Idini , A & Pastore , A 2020 , ' Model nuclear energy density functionals derived from ab initio calculations ' , Journal of Physics G: Nuclear and Particle Physics , vol. 47 , no. 8 , 085107 . https://doi.org/10.1088/1361-6471/ab8d8e

Titel: Model nuclear energy density functionals derived from ab initio calculations
Författare: Salvioni, G.; Dobaczewski, J.; Barbieri, C.; Carlsson, G.; Idini, A.; Pastore, A.
Medarbetare: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Datum: 2020-08
Språk: eng
Sidantal: 22
Tillhör serie: Journal of Physics G: Nuclear and Particle Physics
ISSN: 0954-3899
Permanenta länken (URI): http://hdl.handle.net/10138/321081
Abstrakt: We present the first application of a new approach, proposed in (2016J.Phys.G:Nucl.Part.Phys.4304LT01) to derive coupling constants of the Skyrme energy density functional (EDF) fromab initioHamiltonian. By perturbing theab initioHamiltonian with several functional generators defining the Skyrme EDF, we create a set of metadata that is then used to constrain the coupling constants of the functional. We use statistical analysis to obtain such anab initio-equivalent Skyrme EDF. We find that the resulting functional describes properties of atomic nuclei and infinite nuclear matter quite poorly. This may point to the necessity of building up theab initio-equivalent functionals from more sophisticated generators. However, we also indicate that the current precision of theab initiocalculations may be insufficient for deriving meaningful nuclear EDFs.
Subject: 114 Physical sciences
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