Journal
PHYSICAL REVIEW C
Volume 84, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.84.034616
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Funding
- US National Science Foundation [PHY-0652900, PHY-0968941]
- Japanese Ministry of Education, Science, and Technology (MEXT) [21740213]
- United Kingdom Science and Technology Facilities Council (STFC) [ST/I003363]
- JUSTIPEN (Japan-US Theory Institute for Physics with Exotic Nuclei) [DEFG02-06ER41407]
- STFC [ST/I003363/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [968941] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [21740213] Funding Source: KAKEN
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Nucleon self-energies for Ca-40,Ca-48,Ca-60 isotopes are generated with the microscopic Faddeev-random-phase approximation (FRPA). These self-energies are compared with potentials from the dispersive optical model (DOM) that were obtained from fitting elastic-scattering and bound-state data for Ca-40,Ca-48. The ab initio FRPA is capable of explaining many features of the empirical DOM potentials including their nucleon asymmetry dependence. The comparison furthermore provides several suggestions to improve the functional form of the DOM potentials, including among others the exploration of parity and angular momentum dependence. The nonlocality of the FRPA imaginary self-energy, illustrated by a substantial orbital angular momentum dependence, suggests that future DOM fits should consider this feature explicitly. The roles of the nucleon-nucleon tensor force and charge-exchange component in generating the asymmetry dependence of the FRPA self-energies are explored. The global features of the FRPA self-energies are not strongly dependent on the choice of realistic nucleon-nucleon interactions.
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