Year: 2025
Type: conference-paper
Abstract: Recent applications of the subtracted second random-phase approximation (SSRPA), based on Skyrme functionals, to the study of Gamow-Teller excitations and beta-decay are presented and discussed. The comparison with the conventional random-phase approximation (RPA) results and experimental data is also discussed. It is found that the amount of Gamow-Teller strength obtained in SSRPA is much lower than the RPA one, and it agrees better with experimental data. The inclusion of two-particle-two-hole configurations is responsible for this quenching, avoiding thus the use of any “ad-hoc” quenching factors normally adopted in this kind of studies. This result may have implications for the computation of nuclear matrix elements in the same framework for neutrinoless double-beta decay.
DOI: 10.22323/1.465.0178
Author: Danilo Gambacurta
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4407259089