Nonperturbative shell-model interactions from the in-medium similarity renormalization group.

Abstract

We present the first ab initio construction of valence-space Hamiltonians for medium-mass nuclei based on chiral two- and three-nucleon interactions using the in-medium similarity renormalization group. When applied to the oxygen isotopes, we find experimental ground-state energies are well reproduced, including the flat trend beyond the drip line at (24)O. Similarly, natural-parity spectra in (21,22,23,24)O are in agreement with experiment, and we present predictions for excited states in (25,26)O. The results exhibit a weak dependence on the harmonic-oscillator basis parameter and reproduce spectroscopy within the standard sd valence space.

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Cite this paper

@article{Bogner2014NonperturbativeSI, title={Nonperturbative shell-model interactions from the in-medium similarity renormalization group.}, author={S. K. Bogner and Heiko Hergert and J. Holt and Angela Schwenk and Sven Binder and Angelo Calci and Joachim Langhammer and Roland Roth}, journal={Physical review letters}, year={2014}, volume={113 14}, pages={142501} }