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- W3099277247 abstract "We present a symmetry-based approach for shape coexistence in nuclei, founded on the concept of partial dynamical symmetry (PDS). The latter corresponds to a situation when only selected states (or bands of states) of the coexisting configurations preserve the symmetry while other states are mixed. We construct explicitly critical-point Hamiltonians with two or three PDSs of the type U(5), SU(3), ${overline{rm SU(3)}}$ and SO(6), appropriate to double or triple coexistence of spherical, prolate, oblate and $gamma$-soft deformed shapes, respectively. In each case, we analyze the topology of the energy surface with multiple minima and corresponding normal modes. Characteristic features and symmetry attributes of the quantum spectra and wave functions are discussed. Analytic expressions for quadrupole moments and $E2$ rates involving the remaining solvable states are derived and isomeric states are identified by means of selection rules." @default.
- W3099277247 created "2020-11-23" @default.
- W3099277247 creator A5003824013 @default.
- W3099277247 creator A5087648350 @default.
- W3099277247 date "2017-10-25" @default.
- W3099277247 modified "2023-09-29" @default.
- W3099277247 title "Partial dynamical symmetries and shape coexistence in nuclei" @default.
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- W3099277247 doi "https://doi.org/10.1088/1402-4896/aa8697" @default.
- W3099277247 hasPublicationYear "2017" @default.
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