Many-body theory of degenerate systems
| dc.creator | Brouder, Christian | |
| dc.date | 2003-09-24 | |
| dc.date | 2003-12-09 | |
| dc.date.accessioned | 2026-07-07T02:53:45Z | |
| dc.date.available | 2026-07-07T02:53:45Z | |
| dc.description | The many-body theory of degenerate systems is described in detail. More generally, this theory applies to systems with an initial state that cannot be described by a single Slater determinant. The double-source (or closed-time-path) formalism of nonequilibrium quantum field theory is used to derive an expression for the average value of a product of interacting fields when the initial state is not the vacuum or a Slater determinant. Quantum group techniques are applied to derive the hierarchy of unconnected Green functions and the hierarchy of connected ones. | |
| dc.description | 27 pages | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309558 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309558 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22285 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Many-body theory of degenerate systems | |
| dc.type | text |