Abstract
The single-impurity Kondo problem is investigated with the use of the nonperturbative Lanczos (tridiagonalization) method. We are able to obtain an explicit expression for the ground-state energy in terms of the Kondo coupling constant J. The method places no restrictions on the range of J.
- Received 29 January 1985
DOI:https://doi.org/10.1103/PhysRevB.31.7440
©1985 American Physical Society
