Fermionic bound states on a one-dimensional lattice
| dc.creator | Nguenang, J. -P. | |
| dc.creator | Flach, S. | |
| dc.date | 2009-05-08 | |
| dc.date.accessioned | 2026-07-07T13:13:04Z | |
| dc.date.available | 2026-07-07T13:13:04Z | |
| dc.description | We study bound states of two fermions with opposite spins in an extended Hubbard chain. The particles interact when located both on a site or on adjacent sites. We find three different types of bound states. Type U is predominantly formed of basis states with both fermions on the same site, while two states of type V originate from both fermions occupying neighbouring sites. Type U, and one of the states from type V, are symmetric with respect to spin flips. The remaining one from type V is antisymmetric. V-states are characterized by a diverging localization length below some critical wave number. All bound states become compact for wave numbers at the edge of the Brilloin zone. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0905.1255 | |
| dc.identifier | http://arxiv.org/abs/0905.1255 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/229771 | |
| dc.subject | Quantum Gases | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Fermionic bound states on a one-dimensional lattice | |
| dc.type | text |