Symmetry-broken and equation-of-motion coupled-cluster calculations yield consistent bulk properties for Ca and Ni isotopes across medium-mass chains.
Symmetry-Projected Hartree-Fock-Bogoliubov Equations
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abstract
Symmetry-projected Hartree-Fock-Bogoliubov (HFB) equations are derived using the variational ansatz for the generalized one-body density-matrix in the Valatin form. It is shown that the projected-energy functional can be completely expressed in terms of the HFB density-matrix and the pairing-tensor. The variation of this projected-energy is shown to result in HFB equations with modified expressions for the pairing-potential and the Hartree-Fock field. The expressions for these quantities are explicitly derived for the case of particle number-projection. The numerical applicability of this projection method is studied in an exactly soluble model of a deformed single-j shell.
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From closed shells to open shells: Coupled-cluster calculations of atomic nuclei
Symmetry-broken and equation-of-motion coupled-cluster calculations yield consistent bulk properties for Ca and Ni isotopes across medium-mass chains.