Polaron Crossover and Bipolaronic Metal-Insulator Transition in the half- filled Holstein model
| dc.creator | Capone, M. | |
| dc.creator | Ciuchi, S. | |
| dc.date | 2003-04-30 | |
| dc.date | 2004-01-06 | |
| dc.date.accessioned | 2026-07-07T08:22:24Z | |
| dc.date.available | 2026-07-07T08:22:24Z | |
| dc.description | The formation of a finite density multipolaronic state is analyzed in the context of the Holstein model using the Dynamical Mean-Field Theory. The spinless and spinful fermion cases are compared to disentangle the polaron crossover from the bipolaron formation. The exact solution of Dynamical Mean-Field Theory is compared with weak-coupling perturbation theory, non-crossing (Migdal), and vertex correction approximations. We show that polaron formation is not associated to a metal-insulator transition, which is instead due to bipolaron formation. | |
| dc.description | 4 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0304677 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0304677 | |
| dc.identifier | Phys. Rev. Lett. 91, 186405 (2003) | |
| dc.identifier | doi:10.1103/PhysRevLett.91.186405 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135642 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Polaron Crossover and Bipolaronic Metal-Insulator Transition in the half- filled Holstein model | |
| dc.type | text |