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Evolution of Shell Structure in Neutron-Rich Calcium Isotopes
Open accessAbstract
We employ interactions from chiral effective field theory and compute the binding energies and low-lying excitations of calcium isotopes with the coupled-cluster method. Effects of three-nucleon forces are included phenomenologically as in-medium two-nucleon interactions, and the coupling to the particle continuum is taken into account using a Berggren basis. The computed ground-state energies and the low-lying J(π) = 2+ states for the isotopes (42,48,50,52)Ca are in good agreement with data, and we predict the excitation energy of the first J(π) = 2+ state in (54)Ca at 1.9 MeV, displaying only a weak subshell closure. In the odd-mass nuclei (53,55,61)Ca we find that the positive parity states deviate strongly from the naive shell model.
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Cites
Coupled-cluster theory in quantum chemistry
Bartlett, R. J., & Musiał, M. (2007) · Reviews of Modern Physics · doi:10.1103/revmodphys.79.291 · Cited by 3,343
Cited by
Coupled-cluster computations of atomic nuclei
Hagen, G., Papenbrock, T., Hjorth-Jensen, M., & Dean, D. J. (2014) · Reports on Progress in Physics · doi:10.1088/0034-4885/77/9/096302 · Cited by 531
Self-citationUnexpectedly large charge radii of neutron-rich calcium isotopes
Garcia Ruiz, R. F., Bissell, M. L., Blaum, K., Ekström, A., Frömmgen, N., Hagen, G., Hammen, M., Hebeler, K., Holt, J. D., Jansen, G. R., et al. (2016) · Nature Physics · doi:10.1038/nphys3645 · Cited by 367
Self-citationOptimized Chiral Nucleon-Nucleon Interaction at Next-to-Next-to-Leading Order
Ekström, A., Baardsen, G., Forssén, C., Hagen, G., Hjorth-Jensen, M., Jansen, G. R., Machleidt, R., Nazarewicz, W., Papenbrock, T., Sarich, J., et al. (2013) · Physical Review Letters · doi:10.1103/physrevlett.110.192502 · Cited by 351
Self-citationQuantum Monte Carlo Calculations with Chiral Effective Field Theory Interactions
Gezerlis, A., Tews, I., Epelbaum, E., Gandolfi, S., Hebeler, K., Nogga, A., & Schwenk, A. (2013) · Physical Review Letters · doi:10.1103/physrevlett.111.032501 · Cited by 317
Neutron stars and the nuclear equation of state
Burgio, G. F., Schulze, H.-J., Vidaña, I., & Wei, J.-B. (2021) · Progress in Particle and Nuclear Physics · doi:10.1016/j.ppnp.2021.103879 · Cited by 281
Metadata
- Authors
- Hagen, G., Hjorth-Jensen, M., Jansen, G. R., Machleidt, R., & Papenbrock, T.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-07-17
- Volume
- 109
- Issue
- 3
- Pages
- 032502-032502
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2076908219
- Cited by
- 279
- References
- 1
- FWCI
- 17.86
- Type
- journal article
- Language
- en
- Open access
- green
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