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.

arXiv comment15 pages, 22 figures, published version

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• $\beta$ Decay and Isomeric Properties of Neutron-Rich Ca and Sc Isotopes
• Study of neutron-rich calcium isotopes with a realistic shell-model interaction
• Symmetry energy, neutron skin, and neutron star radius from chiral effective field theory interactions
• Role of three-nucleon forces and many-body processes in nuclear pairing
• Beta decay of Neutron-Rich 53-56Ca

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• A nucleus-dependent valence-space approach to nuclear structure
• A Guided Tour of Ab Initio Nuclear Many-Body Theory
• Non-Empirical Interactions for the Nuclear Shell Model: An Update
• Local chiral effective field theory interactions and quantum Monte Carlo applications
• Ab initio limits of atomic nuclei
• Nuclear forces and their impact on neutron-rich nuclei and neutron-rich matter
• Neutron drip line in the Ca region from Bayesian model averaging
• Neutron matter from chiral two- and three-nucleon calculations up to N${}^3$LO
• Three-Nucleon Forces: Implementation and Applications to Atomic Nuclei and Dense Matter
• Radii and binding energies in oxygen isotopes: a puzzle for nuclear forces
• Ab Initio Multi-Reference In-Medium Similarity Renormalization Group Calculations of Even Calcium and Nickel Isotopes
• Ground and excited states of doubly open-shell nuclei from ab initio valence-space Hamiltonians
• Exploring sd-shell nuclei from two- and three-nucleon interactions with realistic saturation properties
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• 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
• Improved many-body expansions from eigenvector continuation
• 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
• Realistic shell-model calculations for p-shell nuclei including contributions of a chiral three-body force
• Microscopic calculations based on chiral two- and three-nucleon forces for proton- and ${}^4$He-nucleus scattering
• The contribution of chiral three-body forces to the monopole component of the effective shell-model Hamiltonian
• Natural orbitals for many-body expansion methods
• Ab Initio Derivation of Model Energy Density Functionals
• Towards heavy-mass ab initio nuclear structure: Open-shell Ca, Ni and Sn isotopes from Bogoliubov coupled-cluster theory
• Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling
• Nuclear Reactions from Lattice QCD
• Structure of 55Sc and development of the N=34 subshell closure
• A shell-model study of calcium isotopes towards their drip line
• Excited states from eigenvector continuation: the anharmonic oscillator
• Recent progress in configuration-interaction shell model
• Spectroscopy of N=50 isotones with the valence-space density matrix renormalization group
• Level Structures of ${}^{56,58}$Ca Cast Doubt on a doubly magic ${}^{60}$Ca
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• Shell-model interactions from chiral effective field theory
• $\mathbf{N}=32$ 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
• Shell model results for ${}^{47-58}$Ca isotopes in the $fp$, $fp{g}_{9/2}$ and $fp{g}_{9/2}{d}_{5/2}$ model spaces
• Magnetic dipole transition in ${}^{48}$Ca
• Uncovering the mechanism of chiral three-nucleon force in driving spin-orbit splitting
• Least-square approach for singular value decompositions of scattering problems
• 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
• Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes
• 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
• A way forward towards improvement of tensor force in \textit{pf}-shell
• Large scale shell model calculation for collectivity in nuclei beyond 78Ni
• The calculation of single-nucleon energies of nuclei by considering two-body effective interaction, n(k,rho), and a Hartree-Fock inspired scheme
• A detailed view at magnetic dipole strengths: The case of semi-magic ${}^{50}$Ti