Journal
PHYSICAL REVIEW C
Volume 84, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.84.041305
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Funding
- US Department of Energy [DE-FG02-96ER40963, DE-FC02-09ER41583, DE-FG02-06ER41407]
- JSPS [21340073, 20105003]
- Grants-in-Aid for Scientific Research [21340073, 20105003] Funding Source: KAKEN
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We present an efficient method for calculating strength functions using the finite-amplitude method (FAM) for deformed superfluid heavy nuclei within the framework of the nuclear density functional theory. We demonstrate that FAM reproduces strength functions obtained with the fully self-consistent quasiparticle random-phase approximation (QRPA) at a fraction of the computational cost. As a demonstration, we compute the isoscalar and isovector monopole strengths for strongly deformed configurations in Zr-100 and Pu-240 by considering huge quasiparticle QRPA spaces. Our approach to FAM, based on Broyden's iterative procedure, opens the possibility for large-scale calculations of strength distributions in well-deformed superfluid nuclei across the nuclear landscape.
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