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Fitting Skyrme functionals using linear response theory

A. Pastore 1 D. Davesne 2 K. Bennaceur 1 J. Meyer 1 V. Hellemans
2 Théorie
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : Recently, it has been recently shown that the linear response theory in symmetric nuclear matter can be used as a tool to detect finite size instabilities for different Skyrme functionals. In particular it has been shown that there is a correlation between the density at which instabilities occur in infinite matter and the instabilities in finite nuclei. In this article we present a new fitting protocol that uses this correlation to add new additional constraint in Symmetric Infinite Nuclear Matter in order to ensure the stability of finite nuclei against matter fluctuation in all spin and isospin channels. As an application, we give the parameters set for a new Skyrme functional which includes central and spin-orbit parts and which is free from instabilities by construction.
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Submitted on : Wednesday, October 31, 2012 - 7:13:12 AM
Last modification on : Thursday, June 17, 2021 - 3:18:44 PM

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A. Pastore, D. Davesne, K. Bennaceur, J. Meyer, V. Hellemans. Fitting Skyrme functionals using linear response theory. 19th Workshop on Nuclear Physics 'Marie and Pierre Curie', 2012, Kazimierz Dolny, Poland. pp.014014, ⟨10.1088/0031-8949/2013/T154/014014⟩. ⟨in2p3-00747310⟩

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