Collective Modes in Nuclear Systems Far from Stability

Properties of collective modes in very neutron-rich nuclei are discussed. From one side, we overview the effect of the occurrence of neutron skins on the properties of the traditional collective modes, such as the Giant Dipole Resonance and the Giant Quadrupole Resonance. On the other side, we briefly discuss the occurrence of low-lying multipole strength in the case of weakly-bound nuclei close to the drip-lines. Application to the multipole response of weakly-bound cluster nuclei, such as ⁷Li, is presented.