Analysis of the unbound spectrum of ${}^{12}$Li

Abstract

The unbound nucleus ${}^{12}$Li is evaluated by studying three-neutron one-proton excitations within the multistep shell model in the complex energy plane. It is found that the ground state of this system consists of an antibound $2^{-}$ state. A number of narrow states at low energy are found which ensue from the coupling of resonances in ${}^{11}$Li to continuum states close to threshold.

arXiv comment24 pages, 7 figures, 2 tables

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Cited by in corpus (2)

• Shell evolution and its indication on the isospin dependence of the spin-orbit splitting
• Antibound poles in cutoff Woods-Saxon and in Salamon-Vertse potentials