Skyrme-QRPA Calculations of Multipole Strength in Exotic Nuclei
J. Terasaki$^{1-4}$, J. Engel$^1$, M. Bender$^{5}$, J. Dobaczewski$^{2-4,6}$, W. Nazarewicz$^{2,3,6}$, and M. Stoitsov$^{2-4,7}$
$^1$Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255, USA
$^2$Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA
$^3$Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, USA
$^4$Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831, USA
$^5$Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
$^6$Institute of Theoretical Physics, University of Warsaw, ul. Hoza 69, PL 00681 Warsaw, Poland
$^7$Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia-1784, Bulgaria

Abstract

We present test calculations of the quasiparticle random-phase approximation with Skyrme and delta-pairing forces. We examine the convergence of solutions in the isoscalar $0^+$ channel as we increase the number of single-quasiparticle states, and the separation of spurious states from physical excited states in the isoscalar $1^-$ channel. Our calculation is fully self-consistent as it neglects no component of the interaction. We focus on Sn isotopes near the two-neutron drip line.

PACS 21.30.Fe 21.60.Jz 24.30.Cz