Robustness of “noncollective” rotational behavior for nuclei in the presence of random interactions

J. J. Shen, H. Jiang, and G. J. Fu
Phys. Rev. C 104, 054319 – Published 29 November 2021

Abstract

We investigate the robustness of “noncollective” rotational behavior for nuclei with random two-body interactions in the framework of nuclear shell model. The normal I(I+1) behavior of average excitation energy of yrast states is universal for both even-nucleon and odd-nucleon systems by two-body random ensemble. In some special random samplings, especially the samplings with spin-Imax ground state, the inverse noncollective rotational behavior is found for both even-nucleon and odd-nucleon systems in this paper. Interestingly, above rotational behaviors are still robust in the presence of random two-body interactions plus realistic single-particle energies.

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  • Received 9 July 2021
  • Revised 30 October 2021
  • Accepted 16 November 2021

DOI:https://doi.org/10.1103/PhysRevC.104.054319

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

J. J. Shen1, H. Jiang1,*, and G. J. Fu2,†

  • 1School of Arts and Sciences, Shanghai Maritime University, Shanghai 201306, China
  • 2School of Physics Science and Engineering, Tongji University, Shanghai 200092, China

  • *Corresponding author: huijiang@shmtu.edu.cn
  • Corresponding author: gjfu@tongji.edu.cn

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Vol. 104, Iss. 5 — November 2021

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