The Pairing Interaction in the 2D Hubbard Model
| dc.creator | Maier, T. A. | |
| dc.creator | Jarrell, M. | |
| dc.creator | Scalapino, D. J. | |
| dc.date | 2006-05-31 | |
| dc.date.accessioned | 2026-07-07T07:12:19Z | |
| dc.date.available | 2026-07-07T07:12:19Z | |
| dc.description | A dynamic cluster quantum Monte Carlo approximation is used to study the effective pairing interaction of a 2D Hubbard model with a near neighbor hopping $t$ and an on-site Coulomb interaction $U$ . The effective pairing interaction is characterized in terms of the momentum and frequency dependence of the eigenfunction of the leading eigenvalue of the irreducible particle-particle vertex. The momentum dependence of this eigenfunction is found to vary as $(\cos k_x-\cos k_y)$ over most of the Brillouin zone and its frequency dependence is determined by the exchange energy $J$. This implies that the effective pairing interaction is attractive for singlets formed between near-neighbor sites and retarded on a time scale set by $J^{-1}$. The strength of the pairing interaction measured by the size of the d-wave eigenvalue peaks for $U$ of order the bandwidth $8t$. It is found to increase as the system is underdoped. | |
| dc.description | 7 pages, 9 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0606003 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0606003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112045 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | The Pairing Interaction in the 2D Hubbard Model | |
| dc.type | text |