"Exhaustive investigation of nuclear properties within a microscopic multiphonon approach"

Several extensions of the random-phase approximation have been adopted to study the fragmentation of the giant dipole resonance and, in general, the anharmonic features of the nuclear spectra. We have proposed an equation of motion phonon method (EMPM) which generates a multiphonon basis through the construction and solution of a set of equations of motion and, then, adopts such a basis to diagonalize a realistic Hamiltonian. We have applied the EMPM to the neutron rich even-even nuclei 20O, 132Sn, and 208Pb.

The method has been recently extended to odd nuclei. A basis of particle-core states up to three phonons was generated using a Hartree-Fock basis derived from a chiral potential. The generation of the full spectra complemented with the calculation of moments, transition strengths and cross sections provides a complete description of the properties of the two A=17 isobars.

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