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Ab initio coupled-cluster study of 16-O

M. Wloch·D. J. Dean·J. R. Gour·M. Hjorth-Jensen·K. Kowalski·T. Papenbrock·P. Piecuch
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Abstract

We report converged results for the ground and excited states and matter density of 16-O using realistic two-body nucleon-nucleon interactions and coupled-cluster methods and formalism developed in quantum chemistry. Most of the binding is obtained with the coupled-cluster singles and doubles approach. Additional binding due to three-body clusters (triples) is minimal. The coupled-cluster method with singles and doubles provides a good description of the matter density, charge radius, charge form factor, and excited states of a 1-particle-1-hole nature, but it cannot describe the first excited 0+ state. Incorporation of triples has no effect on the latter finding.

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M. Wloch, D. J. Dean, J. R. Gour, M. Hjorth-Jensen, K. Kowalski, T. Papenbrock, P. Piecuch. 2005-01-26. Ab initio coupled-cluster study of 16-O. https://doi.org/10.1103/physrevlett.94.212501

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