Interaction Quench in the Hubbard model
| dc.creator | Moeckel, M. | |
| dc.creator | Kehrein, S. | |
| dc.date | 2008-02-21 | |
| dc.date | 2008-05-09 | |
| dc.date.accessioned | 2026-07-07T09:37:41Z | |
| dc.date.available | 2026-07-07T09:37:41Z | |
| dc.description | Motivated by recent experiments in ultracold atomic gases that explore the nonequilibrium dynamics of interacting quantum many-body systems, we investigate the opposite limit of Landau's Fermi liquid paradigm: We study a Hubbard model with a sudden interaction quench, that is the interaction is switched on at time t=0. Using the flow equation method, we are able to study the real time dynamics for weak interaction U in a systematic expansion and find three clearly separated time regimes: i) An initial buildup of correlations where the quasiparticles are formed. ii) An intermediate quasi-steady regime resembling a zero temperature Fermi liquid with a nonequilibrium quasiparticle distribution function. iii) The long time limit described by a quantum Boltzmann equation leading to thermalization with a temperature T proportional to U. | |
| dc.description | Final version as published | |
| dc.identifier | https://arxiv.org/abs/0802.3202 | |
| dc.identifier | http://arxiv.org/abs/0802.3202 | |
| dc.identifier | Phys. Rev. Lett. 100, 175702 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.100.175702 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160544 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Interaction Quench in the Hubbard model | |
| dc.type | text |