TO
1 - 25 of 2
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Mattis, Daniel C. | Ground state of the Kondo model | 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. | Kondo model; Ground-state energy; Coupling constant | 1985-06 |
| 2 |
 | Mattis, Daniel C. | Multicomponent polaron | By a slight modification of the Fröhlich Hamiltonian (the introduction of an internal quantum number) we reduce the polaron problem to the solution of a continued fraction, even at finite temperature. We analyze both the stationary states and the resonances (in one- and three-dimensional versions o... | Ground-state energy; Coupling constant; Fröhlich model; Finite temperature | 1991-10 |
1 - 25 of 2