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Tools for incorporating a D-wave contribution in Skyrme energy density functionals

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Tools for incorporating a D-wave contribution in Skyrme energy density functionals

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Becker, Pierre; Davesne, Dany; Meyer, Jacques; Pastore, Alessandro; Navarro Faus, Jesús

Aquest document és un/a article, creat/da en: 2015

The possibility of adding a D-wave term to the standard Skyrme effective interaction has been widely considered in the past. Such a term has been shown to appear in the next-to-next-to-leading order of the Skyrme pseudo-potential. The aim of the present article is to provide the necessary tools to incorporate this term in a fitting procedure: first, a mean-field equation written in spherical symmetry in order to describe spherical nuclei and second, the response function to detect unphysical instabilities. With these tools it will be possible to build a new fitting procedure to determine the coupling constants of the new functional.

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