Saturation with chiral interactions and consequences for finite nuclei
By J. Simonis, Steven Ragnar Stroberg, K. Hebeler, J. Holt, A. Schwenk. 2017
142 citations recorded by the source corpus.
We explore the impact of nuclear matter saturation on the properties and systematics of finite nuclei across the nuclear chart. Using the ab initio in-medium similarity renormalization group (IM-SRG), we study ground-state energies and charge radii of closed-shell nuclei from $^4$He to $^{78}$Ni, based on a set of low-resolution two- and three-nucleon interactions that predict realistic saturation properties. We first investigate in detail the convergence properties of these Hamiltonians with respect to model-space truncations for both two- and three-body interactions. We find one particular interaction that reproduces well the ground-state energies of all closed-shell nuclei studied. As expected from their saturation points relative to this interaction, the other Hamiltonians underbind nuclei, but lead to a remarkably similar systematics of ground-state energies. Extending our calculations to complete isotopic chains in the $sd$ and $pf$ shells with the valence-space IM-SRG, the same interaction reproduces not only experimental ground states but two-neutron-separation energies and first excited $2^+$ states. We also calculate radii with the valence-space IM-SRG for the first time. Since this particular interaction saturates at too high density, charge radii are still too small compared with experiment. Except for this underprediction, the radii systematics is, however, well reproduced. Our results highlight the importance of nuclear matter as a theoretical benchmark for the development of next-generation chiral interactions.
Subfields: Nuclear and High Energy Physics, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/acc315e12569f5a18711396bb9e0979f2ba0686f
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nuclear and High Energy Physics
In Spectroscopy
Citations in the corpus
- A Guided Tour of ab initio Nuclear Many-Body Theory (2020, background): “It also yields slightly larger radii than previous interactions, although the underprediction is not eliminated entirely (see references [195, 203] and section 3.”