Spectral properties of a narrow-band Anderson model
We consider single-particle spectra of a symmetric narrow-band Anderson impurity model, where the host bandwidth D is small compared to the hybridization strength Δ0. Simple second-order perturbation theory (2PT) in U is found to produce a rich spectral structure that leads to rather good agreement...
| Hlavní autoři: | , |
|---|---|
| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2001
|