Effective pairing interactions with isospin density dependence

J. Margueron, H. Sagawa, K. Hagino

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

We perform Hartree-Fock-Bogoliubov (HFB) calculations for semi-magic calcium, nickel, tin, and lead isotopes and N=20,28,50, and 82 isotones using density-dependent pairing interactions recently derived from a microscopic nucleon-nucleon interaction. These interactions have an isovector component so that the pairing gaps in symmetric and neutron matter are reproduced. Our calculations well account for the experimental data for the neutron number dependence of binding energy, two-neutron separation energy, and odd-even mass staggering of these isotopes. This result suggests that by introducing the isovector term in the pairing interaction, one can construct a global effective pairing interaction that is applicable to nuclei in a wide range of the nuclear chart. It is also shown with the local density approximation that the pairing field deduced from the pairing gaps in infinite matter reproduces qualitatively well the pairing field for finite nuclei obtained with the HFB method.

Original languageEnglish
Article number054309
JournalPhysical Review C - Nuclear Physics
Volume77
Issue number5
DOIs
Publication statusPublished - 2008 May 14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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