Isospin dependent pairing interactions and BCS-BEC crossover

H. Sagawa, J. Margueron, K. Hagino

研究成果: Conference contribution

抄録

We propose new types of density dependent contact pairing interaction which reproduce the pairing gaps in symmetric and neutron matters obtained by a microscopic treatment based on the reahstic nucleon-nucleon interaction. The BCS-BEC crossover of neutrons pairs in symmetric and asymmetric nuclear matters is studied by using these contact interactions. It is shown that the bare and screened pairing interactions lead to different features of the BCS-BEC crossover in symmetric nuclear matter 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 these density-dependent pairing interactions. Our calculations well account for the experimental data for the neutron number dependence of binding energy, two neutrons separation energy, and odd-even mass staggering of these isotopes. Especially the interaction IS+IV Bare without the medium polarization effect gives satisfactory results for all the isotopes.

本文言語English
ホスト出版物のタイトルNuclear Physics and Astrophysics
ホスト出版物のサブタイトルFrom Stable Beams to Exotic Nuclei
編集者Akif Baha Balantekin, Ismail Boztosun
出版社American Institute of Physics Inc.
ページ142-147
ページ数6
ISBN(印刷版)9780735406032
DOI
出版ステータスPublished - 2008 11 11
イベントInternational Conference on Nuclear Physics and Astrophysics: From Stable Beams to Exotic Nuclei 2008 - Cappadocia-Nevsehir, Turkey
継続期間: 2008 6 252008 6 30

出版物シリーズ

名前AIP Conference Proceedings
1072
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

OtherInternational Conference on Nuclear Physics and Astrophysics: From Stable Beams to Exotic Nuclei 2008
CountryTurkey
CityCappadocia-Nevsehir
Period08/6/2508/6/30

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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