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No-core configuration-interaction model for the isospin- and angular-momentum-projected states

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Satuła, W., Bączyk, P., Dobaczewski, J., & Konieczka, M. (2016). No-core configuration-interaction model for the isospin- and angular-momentum-projected states. Physical Review C, 94(2), Article 024306. https://doi.org/10.1103/PhysRevC.94.024306
Published in
Physical Review C
Authors
Satuła, W. |
Bączyk, P. |
Dobaczewski, Jacek |
Konieczka, M.
Date
2016
Copyright
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

 
Background: Single-reference density functional theory is very successful in reproducing bulk nuclear properties like binding energies, radii, or quadrupole moments throughout the entire periodic table. Its extension to the multireference level allows for restoring symmetries and, in turn, for calculating transition rates. Purpose: We propose a new variant of the no-core-configuration-interaction (NCCI) model treating properly isospin and rotational symmetries. The model is applicable to any nucleus irrespective of its mass and neutronand proton-number parity. It properly includes polarization effects caused by an interplay between the long- and short-range forces acting in the atomic nucleus. Methods: The method is based on solving the Hill-Wheeler-Griffin equation within a model space built of linearly dependent states having good angular momentum and properly treated isobaric spin. The states are generated by means of the isospin and angular-momentum projection applied to a set of low-lying (multi)particle-(multi)hole deformed Slater determinants calculated using the self-consistent Skyrme-Hartree-Fock approach. Results: The theory is applied to calculate energy spectra in N ≈ Z nuclei that are relevant from the point of view of a study of superallowed Fermi β decays. In particular, a new set of the isospin-symmetry-breaking corrections to these decays is given. Conclusions: It is demonstrated that the NCCI model is capable of capturing main features of low-lying energy spectra in light and medium-mass nuclei using relatively small model space and without any local readjustment of its low-energy coupling constants. Its flexibility and a range of applicability makes it an interesting alternative to the conventional nuclear shell model. ...
Publisher
American Physical Society
ISSN Search the Publication Forum
2469-9985
Keywords
nuclei isospin symmetry rotational symmetry no-core-configuration-interaction (NCCI) model
DOI
https://doi.org/10.1103/PhysRevC.94.024306
URI

http://urn.fi/URN:NBN:fi:jyu-201609124081

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/26208242

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  • Matemaattis-luonnontieteellinen tiedekunta [5301]

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