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Exotic neutron-rich medium-mass nuclei with realistic nuclear forces

Naofumi Tsunoda, Takaharu Otsuka, Noritaka Shimizu, Morten Hjorth-Jensen, Kazuo Takayanagi, and Toshio Suzuki
Phys. Rev. C 95, 021304(R) – Published 17 February 2017

Abstract

We present the first application of the newly developed extended Kuo-Krenciglowa (EKK) theory of the effective nucleon-nucleon interaction to shell-model studies of exotic nuclei, including those where conventional approaches with fitted interactions encounter difficulties. This EKK theory enables us to derive an interaction that is suitable for several major shells (sd+pf in this work). By using such an effective interaction obtained from the Entem-Machleidt QCD-based χN3LO interaction and the Fujita-Miyazawa three-body force, the energies, E2 properties, and spectroscopic factors of low-lying states of neutron-rich Ne, Mg, and Si isotopes are nicely described, as the first shell-model description of the “island of inversion” without fit of the interaction. The long-standing question as to how particle-hole excitations occur across the sdpf magic gap is clarified with distinct differences from the conventional approaches. The shell evolution is shown to appear similarly to earlier studies.

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  • Received 14 January 2016
  • Revised 23 January 2017

DOI:https://doi.org/10.1103/PhysRevC.95.021304

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Naofumi Tsunoda1, Takaharu Otsuka1,2,3,4, Noritaka Shimizu1, Morten Hjorth-Jensen5,6, Kazuo Takayanagi7, and Toshio Suzuki8

  • 1Center for Nuclear Study, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
  • 2Department of Physics and Center for Nuclear Study, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
  • 3National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan, 48824, USA
  • 4Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
  • 5National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, 48824, USA
  • 6Department of Physics, University of Oslo, N-0316 Oslo, Norway
  • 7Department of Physics, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102, Japan
  • 8Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3, Setagaya-ku, Tokyo 156-8550, Japan

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Issue

Vol. 95, Iss. 2 — February 2017

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