Projected Hartree-Fock theory as a polynomial of particle-hole excitations and its combination with variational coupled cluster theory
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DOI: 10.1063/1.4983065
Abstract: Projected Hartree-Fock theory provides an accurate description of many kinds of strong correlations but does not properly describe weakly correlated systems. Coupled cluster theory, in contrast, does the opposite. It therefore seems natural to combine… read more here.
Keywords: projected hartree; theory; coupled cluster; cluster theory ... See more keywords