Virginia TechMancini, Jay D.Bowen, Samuel P.Zhou, Yu2014-05-072014-05-071990-03Mancini, J. D.; Bowen, S. P.; Zhou, Y., "Finite-basis many-electron approximation to the Anderson model," Phys. Rev. B 41, 6061 DOI: http://dx.doi.org/10.1103/PhysRevB.41.60610163-1829http://hdl.handle.net/10919/47846A relatively simple many-electron basis is used to construct a matrix for the Anderson impurity Hamiltonian. The basis states are each valid in the thermodynamic limit. The approximate ground-state energy compares well with Bethe-ansatz results for large Coulomb energies. The ground-state wave-function properties are not as well approximated. This method may be well suited to studies of more realistic Hamiltonians and their ground-state energy and its derivatives.en-USIn Copyrightphysics, condensed matterArticle - Refereedhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.41.6061https://doi.org/10.1103/PhysRevB.41.6061