Symmetry restoration in mixed-spin paired heavy nuclei

Rrapaj, Ermal; Macchiavelli, A. O.; Gezerlis, Alexandros

doi:10.1103/PhysRevC.99.014321

Title: Symmetry restoration in mixed-spin paired heavy nuclei

Journal Article · 27 January 2019 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.99.014321 · OSTI ID:1544128

Rrapaj, Ermal ^[1]; Macchiavelli, A. O. ^[2]; Gezerlis, Alexandros ^[1]

Univ. of Guelph, ON (Canada)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

The nature of the nuclear pairing condensates in heavy nuclei, specifically neutron-proton (spin-triplet), versus identical-particle (spin-singlet) pairing has been an active area of research for quite some time. In this work, we probe three candidates that should display spin-triplet, spin-singlet, and mixed-spin pairing. Using theoretical approaches such as the gradient method and symmetry-restoration techniques, we find the ground state of these nuclei in Hartree–Fock–Bogoliubov theory and compute ground state to ground state pair-transfer amplitudes to neighboring isotopes while simultaneously projecting to specific particle number and nuclear-spin values. We identify specific reactions for future experimental research that could shed light on spin-triplet and mixed-spin pairing.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1544128

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 99; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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