Dynamical mean-field theory for the normal phase of the attractive Hubbard model
| dc.creator | Keller, M. | |
| dc.creator | Metzner, W. | |
| dc.creator | Schollwoeck, U. | |
| dc.date | 2001-09-19 | |
| dc.date.accessioned | 2026-07-07T02:42:45Z | |
| dc.date.available | 2026-07-07T02:42:45Z | |
| dc.description | We analyze the normal phase of the attractive Hubbard model within dynamical mean-field-theory. We present results for the pair-density, the spin-susceptibility, the specific heat, the momentum distribution, and for the quasiparticle weight. At weak coupling the low-temperature behavior of all quantities is consistent with Fermi liquid theory. At strong coupling all electrons are bound pairs, which leads to a spin gap and removes fermionic quasi-particle excitations. The transition between the Fermi liquid phase and the pair phase takes place at a critical coupling of the order of the band-width and is generally discontinuous at sufficiently low temperatures. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0109343 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0109343 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/18272 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Dynamical mean-field theory for the normal phase of the attractive Hubbard model | |
| dc.type | text |