| Autor: |
McCoy AE; TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.; Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA., Caprio MA; Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA., Dytrych T; Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Řež, Czech Republic.; Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA., Fasano PJ; Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA. |
| Abstrakt: |
Ab initio nuclear theory provides not only a microscopic framework for quantitative description of the nuclear many-body system, but also a foundation for deeper understanding of emergent collective correlations. A symplectic Sp(3,R)⊃U(3) dynamical symmetry is identified in ab initio predictions, from a no-core configuration interaction approach, and found to provide a qualitative understanding of the spectrum of ^{7}Be. Low-lying states form an Elliott SU(3) spectrum, while an Sp(3,R) excitation gives rise to an excited rotational band with strong quadrupole connections to the ground state band. |
