Linear-response calculation in the time-dependent density functional   theory
  Linear response calculations based on the time-dependent density-functional theory are presented. Especially, we report results of the finite amplitude method which we have recently proposed as an alternative and feasible approach to the (quasiparticle-)random-phase approximation. Calculated properties of the giant resonances and low-energy E1 modes are discussed. We found a universal linear correlation between the low-energy E1 strength and the neutron skin thickness. 
Takashi Nakatsukasa, Tsunenori Inakura, Paolo Avogadro, Shuichiro   Ebata, Koichi Sato, and Kazuhiro Yabana
nucl-th