Three-body forces and proton-rich nuclei

Abstract

We present the first study of three-nucleon (3N) forces for proton-rich nuclei along the N=8 and N=20 isotones. Our results for the ground-state energies and proton separation energies are in very good agreement with experiment where available, and with the empirical isobaric multiplet mass equation. We predict the spectra for all N=8 and N=20 isotones to the proton dripline, which agree well with experiment for 18Ne, 19Na, 20Mg and 42Ti. In all other cases, we provide first predictions based on nuclear forces. Our results are also very promising for studying isospin symmetry breaking in medium-mass nuclei based on chiral effective field theory.

5 pages, 4 figures, minor changes, published version

References in corpus (5)

• Chiral effective field theory and nuclear forces
• Improved nuclear matter calculations from chiral low-momentum interactions
• Evolution of shell structure in neutron-rich calcium isotopes
• Coupled-cluster theory for three-body Hamiltonians
• New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces

Cited by in corpus (7)

• Ab Initio Multi-Reference In-Medium Similarity Renormalization Group Calculations of Even Calcium and Nickel Isotopes
• Three-nucleon forces and spectroscopy of neutron-rich calcium isotopes
• Toward global beyond-mean-field calculations of nuclear masses and low-energy spectra
• Breakdown of the Isobaric Multiplet Mass Equation for the A = 20 and 21 Multiplets
• Isospin nonconserving interaction in the T=1 analogue states of the mass-70 region
• Nuclear Reactions from Lattice QCD
• Nuclear Matter from Effective Quark-Quark Interaction