Symmetry Restoration in Mixed-Spin Paired Heavy Nuclei
arXiv:1807.09294 · doi:10.1103/PhysRevC.99.014321
Abstract
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 neighbouring 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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Cited by in corpus (5)
- Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer
- Band-like structures and quartets in deformed N=Z nuclei
- Spin-Triplet Pairing in Heavy Nuclei is Stable Against Deformation
- Weisskopf units for neutron-proton pair transfers
- Proton-neutron pairing and binding energies of nuclei close to N=Z line