Analytic approximation to the ground-state energy of the Anderson model

Date
1988-09Author
Mancini, J. D.
Massano, W. J.
Potter, C. D.
Bowen, S. P.
Metadata
Show full item recordAbstract
Using the nonperturbative Lanczos recursion scheme an analytic approximation to the ground-state energy of the single-impurity Anderson model is obtained. Calculations are carried out to a 5x5 matrix truncation. Comparisons are made with the exact Bethe-ansatz result.