2015/09/15 by M. Konieczka, P. Baczyk, P. Bączyk +2 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced NMR Techniques and Applications #Atomic physics #Coupling constant #Density functional theory #Fermi Gamma-ray Space Telescope #Formalism (music) #Isospin #Mathematical physics #Nuclear physics research studies #Physics #Pseudovector #Quantum mechanics #Thomas–Fermi model #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.93.042501
published as Phys. Rev. C 93, 042501 (2016) · 5 pages, 6 figures
arxiv created 2015/09/15 · openalex publication_date 2016/04/05 · arxiv updated 2016/04/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A pioneering study of Gamow-Teller (GT) and Fermi matrix elements (MEs) using no-core-configuration-interaction formalism rooted in multireference density functional theory is presented. After a successful test performed for 6He\ensuremath→6Li\phantom\rule4pt0ex\ensuremathβ decay, the model is applied to compute MEs in the sd- and pf-shell T=1/2 mirror nuclei. The calculated GT MEs and the isospin-symmetry-breaking corrections to the Fermi branch are found to be in very good agreement with shell-model predictions in spite of fundamental differences between these models concerning model space, treatment of correlations, or inclusion of a core. This result indirectly supports the two-body-current-based scenarios behind the quenching of the axial-vector coupling constant.