Emergent Soft Monopole Modes in Weakly-Bound Deformed Nuclei
  Based on the Hartree-Fock-Bogoliubov solutions in large deformed coordinate spaces, the finite amplitude method for quasiparticle random phase approximation (FAM-QRPA) has been implemented, providing a suitable approach to probe collective excitations of weakly-bound nuclei embedded in the continuum. The monopole excitation modes in Magnesium isotopes up to the neutron drip line have been studied with the FAM-QRPA framework on both the coordinate-space and harmonic oscillator basis methods. Enhanced soft monopole strengths and collectivity as a result of weak-binding effects have been unambiguously demonstrated. 
J.C. Pei, M. Kortelainen, Y.N. Zhang, F.R. Xu
nucl-th cond-mat.quant-gas nucl-ex