Role of deformation on giant resonances within the quasiparticle random-phase approximation and the Gogny force

Fully consistent axially-symmetric-deformed quasiparticle random phase approximation (QRPA) calculations have been performed, in which the same Gogny D1S effective force has been used for both the Hartree-Fock-Bogolyubov mean field and the QRPA approaches. Giant resonances calculated in deformed ^26-28Si and ^22-24Mg nuclei as well as in the spherical ³⁰Si and ²⁸Mg isotopes are presented. Theoretical results for isovector-dipole and isoscalar monopole, quadrupole, and octupole responses are presented and the impact of the intrinsic nuclear deformation is discussed.