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- W2003709834 abstract "We present several coupled-cluster calculations of ground and excited states of 4He and 16O employing methods from quantum chemistry. A comparison of coupled cluster results with the results of exact diagonalization of the hamiltonian in the same model space and other truncated shell-model calculations shows that the quantum chemistry inspired coupled cluster approximations provide an excellent description of ground and excited states of nuclei, with much less computational effort than traditional large-scale shell-model approaches. Unless truncations are made, for nuclei like 16O, full-fledged shell-model calculations with four or more major shells are not possible. However, these and even larger systems can be studied with the coupled cluster methods due to the polynomial rather than factorial scaling inherent in standard shell-model studies. This makes the coupled cluster approaches, developed in quantum chemistry, viable methods for describing weakly bound systems of interest for future nuclear facilities." @default.
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- W2003709834 date "2005-04-01" @default.
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- W2003709834 title "Nuclear Structure Calculations with Coupled Cluster Methods from Quantum Chemistry" @default.
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- W2003709834 doi "https://doi.org/10.1016/j.nuclphysa.2005.02.041" @default.
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