Application of the connected-moment expansion to single-impurity Anderson Hamiltonians
Massano, W. J.
Bowen, S. P.
Mancini, J. D.
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We use the connected-moment expansion, recently developed by Cioslowski [Phys. Rev. Lett. 58, 83 (1987)], to investigate the ground-state energy of the single-impurity Anderson model. It is found that the moment expansion obtained for this Hamiltonian is not a Stieltjes series and thus does not provide a useful method for estimating ground-state energies.