Finite-temperature pairing re-entrance in the drip-line nucleus Ni48

Mohamed Belabbas, Jia Jie Li, and Jérôme Margueron
Phys. Rev. C 96, 024304 – Published 10 August 2017

Abstract

Finite-temperature Hartree-Fock-Bogoliubov theory using Skyrme interactions and relativistic Hartree-Fock effective Lagrangians predicts Ni48 as being a possible candidate for the finite-temperature pairing re-entrance phenomenon. For this proton-drip-line nucleus, proton resonant states are expected to contribute substantially to pairing correlations and the two predicted critical temperatures are Tc10.080.2 MeV and Tc20.70.9 MeV. It is also shown that pairing re-entrance modifies the proton single-particle energies around the Fermi level, as well as occupation numbers and quasiparticle levels. The understanding of pairing re-entrance in Ni48 presently challenges our understanding of exotic matter under extreme conditions.

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  • Received 21 October 2016
  • Revised 21 February 2017

DOI:https://doi.org/10.1103/PhysRevC.96.024304

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Mohamed Belabbas1, Jia Jie Li2, and Jérôme Margueron3,4

  • 1Département de Physique, Faculté des Sciences Exactes et Informatique, Hassiba Benbouali University of Chlef, P.O. Box 151, 02000, Ouled Fares, Chlef, Algeria
  • 2School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 3Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195, USA
  • 4Institut de Physique Nucléaire de Lyon, CNRS/IN2P3, Université de Lyon, Université Claude Bernard Lyon 1, F-69622 Villeurbanne Cedex, France

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Issue

Vol. 96, Iss. 2 — August 2017

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