@article{Stroberg2017,
abstract = {We present a nucleus-dependent valence-space approach for calculating ground and excited states of nuclei, which generalizes the shell-model in-medium similarity renormalization group to an ensemble reference with fractionally filled orbitals. Because the ensemble is used only as a reference, and not to represent physical states, no symmetry restoration is required. This allows us to capture three-nucleon (3N) forces among valence nucleons with a valence-space Hamiltonian specifically targeted to each nucleus of interest. Predicted ground-state energies from carbon through nickel agree with results of other large-space ab initio methods, generally to the 1% level. In addition, we show that this new approach is required in order to obtain convergence for nuclei in the upper p and sd shells. Finally, we address the 1+/3+ inversion problem in Na22 and V46. This approach extends the reach of ab initio nuclear structure calculations to essentially all light- and medium-mass nuclei.},
archivePrefix = {arXiv},
arxivId = {1607.03229},
author = {Stroberg, S. R. and Calci, A. and Hergert, H. and Holt, J. D. and Bogner, S. K. and Roth, R. and Schwenk, A.},
doi = {10.1103/PhysRevLett.118.032502},
eprint = {1607.03229},
issn = {10797114},
journal = {Physical Review Letters},
month = {jan},
number = {3},
pages = {032502},
pmid = {28157334},
title = {{Nucleus-Dependent Valence-Space Approach to Nuclear Structure}},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.118.032502},
volume = {118},
year = {2017}
}

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