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Coupled cluster theory is an attractive tool to solve the quantum many-body problem because its singles and doubles (CCSD) approximation is computationally affordable and yields about 90% of the correlation energy. Capturing the remaining 10%, e. g. , via including triples, is numerically expensive. Here, we assume that short-range three-body correlations dominate and---following Lepage (arXiv: nucl-th/9706029) ---that their effects can be included within CCSD by renormalizing the three-body contact interaction. We renormalize this contact in ^16O and obtain systematically improved CCSD results for ^24O, ^20--34Ne, ^40, 48Ca, ^78Ni, ^90Zr, and ^100Sn.
Sun et al. (Mon,) studied this question.