%0 Journal Article
%T Symmetry-Projected Hartree-Fock-Bogoliubov Equations
%A Javid A. Sheikh
%A Peter Ring
%J Physics
%D 1999
%I arXiv
%R 10.1016/S0375-9474(99)00424-8
%X 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.
%U http://arxiv.org/abs/nucl-th/9907065v1