Wobbling motion for a triaxial rotor plus a single quasiparticle

Wobbling motion in a system comprising a triaxial rotor and a single quasiparticle is studied employing the particle-rotor model.The energy spectra,wobbling frequencies,electromagnetic transition probabilities,g-factors,angular momentum components,spin coherent state maps,and static quadrupole moments are investigated.These investigations were conducted with regard to the Fermi surface transitioning from the lowest h_(11/2) orbit to the highest one.As the Fermi surface increases,notable transformations occur in the wobbling mode.Initially,the mode exhibits a transverse revolution around the short axis of the nucleus.However,as the Fermi surface continues to increase,the mode gradually shifts to a longitudinal revolution around the intermediate axis.Eventually,it transitions to a transverse revolution around the long axis.Notably,the stability of the long axis transverse mode diminishes relative to its counterpart along the short axis as the total angular momentum increases atγ=20∘.

Influence of different fields of mesons on the pseudospin symmetry in single-neutron resonant states

In the framework of the relativistic mean field theory combined with the complex momentum representation method,we elucidate the pseudospin symmetry in the single-neutron resonant states and its dependence on the σ,ω,and ρ meson fields.Compared with the effect of theρfield,the τandωfields provide the main contributions to the pseudospin energy and width splitting of the resonant pseudospin doublets.Especially,we compare quantitatively the pseudospin wave functions's plittings in resonant doublets,and investigate their dependencies on different fields of mesons,which is consistent with that of energy and width splittings.Current research is helpful to understand the mechanism and properties of pseudospin symmetry for resonant states.