Abstract
We develop a new method to describe electromagnetic observables of open-shell nuclei with two nucleons outside a closed shell. This approach combines the equation-of-motion coupled-cluster method for such systems and the Lorentz integral transform technique, expanding the applicability of coupled-cluster theory for electromagnetic observables beyond closed-(sub)shell nuclei. To validate this new approach, we compute the non-energy-weighted dipole sum rule and the dipole polarizability of 16,24O in both the closed-(sub)shell and the new equation-of-motion coupled-cluster frameworks, finding agreement within error bars. We then analyze the evolution of the dipole polarizability along the oxygen and calcium isotopic chains. Our predictions agree well with available experimental data and other available theoretical calculations for the closed-(sub)shell 16,22O and the open-shell O18. In the calcium isotopes, we observe that our dipole polarizability predictions for open-shell nuclei are lower than those of closed-(sub)shell nuclei. We expect that our predictions for O24 and 54,56Ca will motivate future experimental studies at the drip line.
| Original language | English |
|---|---|
| Article number | 044306 |
| Journal | Physical Review C |
| Volume | 110 |
| Issue number | 4 |
| DOIs | |
| State | Published - Oct 2024 |
Funding
We gratefully acknowledge insightful discussions with Thomas Papenbrock. F.B. would also like to thank the ORNL Nuclear Theory group for their hospitality and support during different phases of this work, and Christian Forssn and Weiguang Jiang for useful discussions on uncertainty quantification. This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 279384907-SFB 1245 and through the Cluster of Excellence Precision Physics, Fundamental Interactions, and Structure of Matter (EXC 2118/1, Project ID 39083149), by the Office of Nuclear Physics, U.S. Department of Energy, under SciDAC-5 (NUCLEI collaboration) and Contract No. DE-FG02-97ER41014, and Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC (Oak Ridge National Laboratory). Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program and by the supercomputer Mogon at Johannes Gutenberg Universitt Mainz. This research used resources of the Oak Ridge Leadership Computing Facility located at ORNL, which is supported by the Office of Science of the Department of Energy under Contract No. DE-AC05-00OR22725. This paper has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan We gratefully acknowledge insightful discussions with Thomas Papenbrock. F.B. would also like to thank the ORNL Nuclear Theory group for their hospitality and support during different phases of this work, and Christian Forss\u00E9n and Weiguang Jiang for useful discussions on uncertainty quantification. This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 279384907 - SFB 1245 and through the Cluster of Excellence \u201CPrecision Physics, Fundamental Interactions, and Structure of Matter\u201D ( EXC 2118/1, Project ID 39083149), by the Office of Nuclear Physics, U.S. Department of Energy, under SciDAC-5 (NUCLEI collaboration) and Contract No. DE-FG02-97ER41014, and Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC (Oak Ridge National Laboratory). Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program and by the supercomputer Mogon at Johannes Gutenberg Universit\u00E4t Mainz. This research used resources of the Oak Ridge Leadership Computing Facility located at ORNL, which is supported by the Office of Science of the Department of Energy under Contract No. DE-AC05-00OR22725. This paper has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan .
| Funders | Funder number |
|---|---|
| DOE Public Access Plan | |
| Mogon at Johannes Gutenberg Universitt Mainz | |
| Oak Ridge National Laboratory | |
| Office of Science of the Department of Energy | |
| Nuclear Physics | |
| Deutsche Forschungsgemeinschaft | 39083149, EXC 2118/1, 279384907 - SFB 1245 |
| Deutsche Forschungsgemeinschaft | |
| U.S. Department of Energy | DE-FG02-97ER41014, DE-AC05-00OR22725, SciDAC-5 |
| U.S. Department of Energy |