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Collective vibrational states within the fast iterative quasiparticle random-phase approximation method

Carlsson, Gillis LU ; Toivanen, J. and Pastore, A. (2012) In Physical Review C (Nuclear Physics) 86(1).
Abstract
An iterative method we previously proposed to compute nuclear strength functions [Toivanen et al., Phys. Rev. C 81, 034312 (2010)] is developed to allow it to accurately calculate properties of individual nuclear states. The approach is based on the quasiparticle random-phase approximation (QRPA) and uses an iterative non-Hermitian Arnoldi diagonalization method where the QRPA matrix does not have to be explicitly calculated and stored. The method gives substantial advantages over conventional QRPA calculations with regards to the computational cost. The method is used to calculate excitation energies and decay rates of the lowest-lying 2(+) and 3(-) states in Pb, Sn, Ni, and Ca isotopes using three different Skyrme interactions and a... (More)
An iterative method we previously proposed to compute nuclear strength functions [Toivanen et al., Phys. Rev. C 81, 034312 (2010)] is developed to allow it to accurately calculate properties of individual nuclear states. The approach is based on the quasiparticle random-phase approximation (QRPA) and uses an iterative non-Hermitian Arnoldi diagonalization method where the QRPA matrix does not have to be explicitly calculated and stored. The method gives substantial advantages over conventional QRPA calculations with regards to the computational cost. The method is used to calculate excitation energies and decay rates of the lowest-lying 2(+) and 3(-) states in Pb, Sn, Ni, and Ca isotopes using three different Skyrme interactions and a separable Gaussian pairing force. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
86
issue
1
publisher
American Physical Society
external identifiers
  • wos:000305936100007
  • scopus:84864403697
ISSN
0556-2813
DOI
10.1103/PhysRevC.86.014307
language
English
LU publication?
yes
id
ef9983ab-ea2a-408f-a2cc-36541faa3abc (old id 3001389)
date added to LUP
2012-08-21 12:00:37
date last changed
2017-09-24 04:00:40
@article{ef9983ab-ea2a-408f-a2cc-36541faa3abc,
  abstract     = {An iterative method we previously proposed to compute nuclear strength functions [Toivanen et al., Phys. Rev. C 81, 034312 (2010)] is developed to allow it to accurately calculate properties of individual nuclear states. The approach is based on the quasiparticle random-phase approximation (QRPA) and uses an iterative non-Hermitian Arnoldi diagonalization method where the QRPA matrix does not have to be explicitly calculated and stored. The method gives substantial advantages over conventional QRPA calculations with regards to the computational cost. The method is used to calculate excitation energies and decay rates of the lowest-lying 2(+) and 3(-) states in Pb, Sn, Ni, and Ca isotopes using three different Skyrme interactions and a separable Gaussian pairing force.},
  articleno    = {014307},
  author       = {Carlsson, Gillis and Toivanen, J. and Pastore, A.},
  issn         = {0556-2813},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Collective vibrational states within the fast iterative quasiparticle random-phase approximation method},
  url          = {http://dx.doi.org/10.1103/PhysRevC.86.014307},
  volume       = {86},
  year         = {2012},
}