Probing ab initio emergence of nuclear rotation
Journal Article
·
· European Physical Journal. A
- University of Notre Dame, IN (United States); Iowa State University
- University of Notre Dame, IN (United States)
- Iowa State Univ., Ames, IA (United States)
- TRIUMF, Vancouver, BC (Canada)
Structural phenomena in nuclei, from shell structure and clustering to superfluidity and collective rotations and vibrations, reflect emergent degrees of freedom. Ab initio theory describes nuclei directly from a fully microscopic formulation. We can therefore look to ab initio theory as a means of exploring the emergence of effective degrees of freedom in nuclei. For the illustrative case of emergent rotational bands in the $Be$ isotopes, we establish an understanding of the underlying oscillator space and angular momentum (orbital and spin) structure. We consider no-core configuration interaction (NCCI) calculations for 7, 9, 11Be with the Daejeon16 internucleon interaction. Although shell model or rotational degrees of freedom are not assumed in the ab initio theory, the NCCI results are suggestive of the emergence of effective shell model degrees of freedom (0$$\hbar$$ω and 2$$\hbar$$ω excitations) and LS-scheme rotational degrees of freedom, consistent with an Elliott–Wilsdon SU(3) description. Finally, these results provide some basic insight into the connection between emergent effective collective rotational and shell model degrees of freedom in these light nuclei and the underlying ab initio microscopic description.
- Research Organization:
- Iowa State Univ., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231; FG02-87ER40371; FG02-95ER40934
- OSTI ID:
- 2278980
- Alternate ID(s):
- OSTI ID: 1800676
OSTI ID: 22898651
- Journal Information:
- European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 4 Vol. 56; ISSN 1434-6001
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
| Report from the A.I. For Nuclear Physics Workshop | preprint | January 2020 |
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