2012/08/23 by K. Nomura, R. Rodrı́guez-Guzmán, R. Rodriguez-Guzman +3
Physics and Astronomy · #Advanced Chemical Physics Studies #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.86.034322
published as Phys. Rev. C 86, 034322 (2012) · 12 pages, 6 figures, 1 table
arxiv created 2012/08/23 · openalex publication_date 2012/09/17 · arxiv updated 2012/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
We investigate the emergence and evolution of shape coexistence in the neutron-deficient lead isotopes within the interacting boson model (IBM) plus configuration mixing with microscopic input based on the Gogny energy density functional (EDF). The microscopic potential-energy surface obtained from the constrained self-consistent Hartree-Fock-Bogoliubov method employing the Gogny-D1M EDF is mapped onto the coherent-state expectation value of the configuration mixing IBM Hamiltonian. In this way, the parameters of the IBM Hamiltonian are fixed for each of the three relevant configurations (spherical, prolate, and oblate) associated to the mean-field minima. Subsequent diagonalization of the Hamiltonian provides the excitation energy of the low-lying states and transition strengths among them. The model predictions for the 0+ level energies and evolving shape coexistence in the considered lead chain are consistent both with experiment and with the indications of the Gogny-EDF energy surfaces.