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dc.contributor.authorKonieczka, M.
dc.contributor.authorKortelainen, Markus
dc.contributor.authorSatuła, W.
dc.date.accessioned2018-03-26T09:18:00Z
dc.date.available2018-03-26T09:18:00Z
dc.date.issued2018
dc.identifier.citationKonieczka, M., Kortelainen, M., & Satuła, W. (2018). Gamow-Teller response in the configuration space of a density-functional-theory–rooted no-core configuration-interaction model. <em>Physical Review C</em>, 97 (3), 034310. <a href="https://doi.org/10.1103/physrevc.97.034310">doi:10.1103/physrevc.97.034310</a>
dc.identifier.otherTUTKAID_77004
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/57420
dc.description.abstractBackground: The atomic nucleus is a unique laboratory in which to study fundamental aspects of the electroweak interaction. This includes a question concerning in medium renormalization of the axial-vector current, which still lacks satisfactory explanation. Study of spin-isospin or Gamow-Teller (GT) response may provide valuable information on both the quenching of the axial-vector coupling constant as well as on nuclear structure and nuclear astrophysics. Purpose: We have performed a seminal calculation of the GT response by using the no-core configuration-interaction approach rooted in multireference density functional theory (DFT-NCCI). The model treats properly isospin and rotational symmetries and can be applied to calculate both the nuclear spectra and transition rates in atomic nuclei, irrespectively of their mass and particle-number parity. Methods: The DFT-NCCI calculation proceeds as follows: First, one builds a configuration space by computing relevant, for a given physical problem, (multi)particle-(multi)hole Slater determinants. Next, one applies the isospin and angular-momentum projections and performs the isospin and K mixing in order to construct a model space composed of linearly dependent states of good angular momentum. Eventually, one mixes the projected states by solving the Hill-Wheeler-Griffin equation. Results: The method is applied to compute the GT strength distribution in selected N ≈ Z nuclei including the p -shell 8 Li and 8 Be nuclei and the s d -shell well-deformed nucleus 24 Mg . In order to demonstrate a flexibility of the approach we present also a calculation of the superallowed GT β decay in doubly-magic spherical 100 Sn and the low-spin spectrum in 100 In . Conclusions: It is demonstrated that the DFT-NCCI model is capable of capturing the GT response satisfactorily well by using a relatively small configuration space, exhausting simultaneously the GT sum rule. The model, due to its flexibility and broad range of applicability, may either serve as a complement or even as an alternative to other theoretical approaches, including the conventional nuclear shell model.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherbeta decay
dc.subject.otherelectroweak interactions in nuclear physics
dc.subject.othernuclear density functional theory
dc.titleGamow-Teller response in the configuration space of a density-functional-theory–rooted no-core configuration-interaction model
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201803191764
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2018-03-19T13:15:16Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.volume97
dc.type.versionpublishedVersion
dc.rights.copyright© 2018 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1103/physrevc.97.034310


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