Abstract
Nuclei around N≈Z≈40 are strongly deformed and exhibit coexistence of shapes. These phenomena have challenged nuclear models. Here, we perform ab initio coupled-cluster computations of low-lying collective states and electromagnetic quadrupole transitions of the even-even nuclei Kr72, Sr76,78, Zr78,80, and Mo84 starting from chiral nucleon-nucleon and three-nucleon forces. Our calculations reproduce the coexistence of oblate and prolate shapes in these nuclei, yield rotational bands and strong electromagnetic transitions, but are not accurate for some observables and nuclei. These results highlight the advances and challenges of ab initio computations of heavy deformed nuclei.
| Original language | English |
|---|---|
| Article number | L011302 |
| Journal | Physical Review C |
| Volume | 110 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 2024 |
Funding
This work was supported by the U.S. Department of Energy (DOE), Office of Science, under SciDAC-5 (NUCLEI collaboration), under Grant No. DE-FG02-97ER41014, and by the Quantum Science Center, a National Quantum Information Science Research Center of the U.S. Department of Energy. Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. This research used resources from the Oak Ridge Leadership Computing Facility located at Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. Acknowledgments. We thank T. Miyagi for the NuHamil code and R. Stroberg for the code used to generate matrix elements of the chiral three-body interaction. This work was supported by the U.S. Department of Energy (DOE), Office of Science, under SciDAC-5 (NUCLEI collaboration), under Grant No. DE-FG02-97ER41014, and by the Quantum Science Center, a National Quantum Information Science Research Center of the U.S. Department of Energy. Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. This research used resources from the Oak Ridge Leadership Computing Facility located at Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.