New concept for the pairing anti-halo effect as a localized wave packet of quasiparticles

K. Hagino and H. Sagawa
Phys. Rev. C 95, 024304 – Published 6 February 2017

Abstract

The pairing anti-halo effect is a phenomenon that a pairing correlation suppresses a divergence of nuclear radius, which happens for single-particle states with orbital angular momenta of l=0 and 1 in the limit of vanishing binding energy. While this effect has mainly been discussed in terms of Hartree-Fock-Bogoliubov (HFB) theory, we here use a three-body model and provide its new intuitive concept as a localized wave packet for a quasiparticle, that is, a coherent superposition of a weakly bound and continuum wave functions due to a pairing interaction. We show that the one-particle density in the three-body model can be directly expressed with such quasiparticle wave functions, which have a close analog to wave functions in the HFB approximation.

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  • Received 29 August 2016

DOI:https://doi.org/10.1103/PhysRevC.95.024304

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

K. Hagino1,2,3 and H. Sagawa4,5

  • 1Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 2Research Center for Electron Photon Science, Tohoku University, 1-2-1 Mikamine, Sendai 982-0826, Japan
  • 3National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
  • 4RIKEN Nishina Center, Wako 351-0198, Japan
  • 5Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8560, Japan

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Issue

Vol. 95, Iss. 2 — February 2017

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