Symmetry Restoration in Mixed-Spin Paired Heavy Nuclei
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.
Keywords
Cite
@article{arxiv.1807.09294,
title = {Symmetry Restoration in Mixed-Spin Paired Heavy Nuclei},
author = {Ermal Rrapaj and A. O. Macchiavelli and Alexandros Gezerlis},
journal= {arXiv preprint arXiv:1807.09294},
year = {2019}
}