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Proton-neutron pairing vibrations in N=Z nuclei: Precursory soft mode of isoscalar pairing condensation

Kenichi Yoshida
Phys. Rev. C 90, 031303(R) – Published 29 September 2014

Abstract

L=0 proton-neutron (pn) pair-addition and pair-removal strengths in Ca40 and Ni56 are investigated by means of the pn particle-particle random-phase approximation employing a Skyrme energy-density functional. It is found that the collectivity of the lowest Jπ=1+ state in the adjacent odd-odd nuclei becomes stronger as the strength of the isoscalar (T=0) pairing interaction increases. The results suggest the emergence of the T=0 pn-pairing vibrational mode as a possible critical phenomenon toward the T=0 pairing condensation.

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  • Received 15 April 2014
  • Revised 7 July 2014

DOI:https://doi.org/10.1103/PhysRevC.90.031303

©2014 American Physical Society

Authors & Affiliations

Kenichi Yoshida

  • Graduate School of Science and Technology, Niigata University, Niigata 950-0913, Japan

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Issue

Vol. 90, Iss. 3 — September 2014

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