Efficient calculation for the quasiparticle random-phase approximation matrix

Abstract

We present an efficient numerical technique to evaluate the matrix of the (quasiparticle)-random-phase approximation, using the finite amplitude method (FAM). The method is tested in calculation of monopole excitations in 120Sn, compared with result obtained with the former iterative FAM. The neutron-pair-transfer modes are calculated with the present method and their character change in neutron-rich Pb isotopes is discussed. Computational aspects of different FAM approaches are also discussed for future applications to a large-scale computation.

18 pages, 2 figures

References in corpus (3)

• Finite amplitude method for the quasi-particle-random-phase approximation
• Dipole responses in Nd and Sm isotopes with shape transitions
• Shape mixing dynamics in the low-lying states of proton-rich Kr isotopes