Three-nucleon forces and spectroscopy of neutron-rich calcium isotopes

Abstract

We study excited-state properties of neutron-rich calcium isotopes based on chiral two- and three-nucleon interactions. We first discuss the details of our many-body framework, investigate convergence properties, and for two-nucleon interactions benchmark against coupled-cluster calculations. We then focus on the spectroscopy of 47-56Ca, finding that with both 3N forces and an extended pfg9/2 valence space, we obtain a good level of agreement with experiment. We also study electromagnetic transitions and find that experimental data are well described by our calculations. In addition, we provide predictions for unexplored properties of neutron-rich calcium isotopes.

15 pages, 22 figures, published version

References in corpus (15)

• Chiral effective field theory and nuclear forces
• Nuclear magic numbers: new features far from stability
• Improved nuclear matter calculations from chiral low-momentum interactions
• Three-body forces: From cold atoms to nuclei
• Evolution of shell structure in neutron-rich calcium isotopes
• In-Medium Similarity Renormalization Group for Nuclei
• Coupled-cluster theory for three-body Hamiltonians
• In-Medium Similarity Renormalization Group with Chiral Two- Plus Three-Nucleon Interactions
• In-Medium Similarity Renormalization Group for Open-Shell Nuclei
• Cross-shell excitation in two-proton knockout: Structure of ${}^{52}$Ca
• New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces
• Low-momentum interactions with smooth cutoffs
• Three-body forces and proton-rich nuclei
• Study of neutron-rich calcium isotopes with a realistic shell-model interaction
• Beta decay of Neutron-Rich 53-56Ca

Cited by in corpus (34)

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• Local chiral effective field theory interactions and quantum Monte Carlo applications
• Neutron matter from chiral two- and three-nucleon calculations up to N${}^3$LO
• Ab Initio Multi-Reference In-Medium Similarity Renormalization Group Calculations of Even Calcium and Nickel Isotopes
• In-Medium Similarity Renormalization Group for Closed and Open-Shell Nuclei
• Angular-momentum projection in coupled-cluster theory: structure of ${}^{34}$Mg
• In-medium similarity renormalization group with three-body operators
• Ground-State Electromagnetic Moments of Calcium Isotopes
• Shell evolution of $N=40$ isotones towards ${}^{60}$Ca: First spectroscopy of ${}^{62}$Ti
• Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy
• Towards heavy-mass ab initio nuclear structure: Open-shell Ca, Ni and Sn isotopes from Bogoliubov coupled-cluster theory
• Nuclear Reactions from Lattice QCD
• Structure of 55Sc and development of the N=34 subshell closure
• Excited states from eigenvector continuation: the anharmonic oscillator
• Recent progress in configuration-interaction shell model
• Level Structures of ${}^{56,58}$Ca Cast Doubt on a doubly magic ${}^{60}$Ca
• Effective proton-neutron interaction near the drip line from unbound states in ${}^{25,26}$F
• Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group
• $\mathbf{N}=32$ shell closure below calcium: Low-lying structure of ${}^{50}$Ar
• Structure of ${}^{46,47}$Ca from the ${\beta }^{-}$ decay of ${}^{46,47}$K in the framework of nuclear shell model
• Magnetic dipole transition in ${}^{48}$Ca
• Least-square approach for singular value decompositions of scattering problems
• Uncovering the mechanism of chiral three-nucleon force in driving spin-orbit splitting
• Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes
• Spectroscopic study of ${}^{47}$Ca from the ${\beta }^{-}$ decay of ${}^{47}$K
• Low-spin particle/hole-core excitations in ${}^{41,47,49}$Ca isotopes studied by cold-neutron capture reactions
• Importance truncation for the in-medium similarity renormalization group
• Detailed spectroscopy of ${}^{46}$Ca: A study of the ${\beta }^{-}$ decay of ${}^{46}$K
• Statistical Nuclear Spectroscopy with $q$-normal and bivariate $q$-normal distributions and $q$-Hermite polynomials
• On the robustness of sub-shell closures: A high angular momentum analysis of the titanium isotopes
• Randomized Low-Rank Decompositions of Nuclear Three-Body Interactions
• Precision measurement of the ${}^{43}$Ca${}^{+}$ nuclear magnetic moment
• Large scale shell model calculation for collectivity in nuclei beyond 78Ni
• A detailed view at magnetic dipole strengths: The case of semi-magic ${}^{50}$Ti