Isospin-symmetry breaking in nuclear structure
Résumé
The breaking of the isospin symmetry is discussed from the point
of view of the nuclear shell-model. The accuracy of the theoretical framework is
demonstrated on the description of the isobaric multiplet splittings. The use of
phenomenological versus realistic interactions is discussed. We demonstrate the relevance
of the theoretical description for isospin-forbidden processes. The developed
formalism is important for the calculation of isospin-symmetry breaking corrections
to the weak-interaction process on nuclei, and it can provide missing information on
the structure of proton-rich nuclei relevant for astrophysics applications.