2015/02/17 by Yifei Niu, Y. Niu, Zhongming Niu +5 · 4 citations
Physics and Astronomy · #Atomic physics #Coupling (piping) #MAGIC (telescope) #Materials science #Nuclear physics research studies #Phase (matter) #Phase space #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chaos and dynamical systems #Quantum mechanics #Random phase approximation #nucl-th
paper · pdf · doi:10.1103/physrevlett.114.142501
published as Phys. Rev. Lett. 114, 142501 (2015) · 5 pages, 3 figures
arxiv created 2015/02/17 · openalex publication_date 2015/04/08 · arxiv updated 2015/04/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Nuclear β decay in magic nuclei is investigated, taking into account the coupling between particles and collective vibrations, on top of self-consistent random phase approximation calculations based on Skyrme density functionals. The low-lying Gamow-Teller strength is shifted downwards and at times becomes fragmented; as a consequence, the β-decay half-lives are reduced due to the increase of the phase space available for the decay. In some cases, this leads to a very good agreement between theoretical and experimental lifetimes: this happens, in particular, in the case of the Skyrme force SkM* that can also reproduce the line shape of the high-energy Gamow-Teller resonance as was previously shown.