Generating functional for the full parquet approximation
| dc.creator | Janis, Vaclav | |
| dc.date | 1998-06-09 | |
| dc.date.accessioned | 2026-07-07T03:10:48Z | |
| dc.date.available | 2026-07-07T03:10:48Z | |
| dc.description | Parquet diagrams sum self-consistently Feynman graphs for the vertex function with all two-particle multiple scatterings. We show how the complete parquet equations for the Hubbard-like models can be integrated to a generating functional from which all thermodynamic quantities are derived via (functional) derivatives. An explicit Luttinger-Ward functional $Φ[G;Λ,{\cal K};U]$ is constructed containing only the renormalized one-particle, $G$, irreducible, $Λ$, and reducible, ${\cal K}$, two-particle propagators as independent variational functions. The parquet approximation is proven to be a thermodynamically consistent, $Φ$-derivable theory obeying the necessary conservation laws. | |
| dc.description | REVTeX, 7 pages, 5 eps figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9806118 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9806118 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28346 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Generating functional for the full parquet approximation | |
| dc.type | text |