Resonant Thermalization of periodically driven strongly correlated electrons
- Datum: 18.04.2018
- Uhrzeit: 11:00 - 12:00
- Vortragende(r): Marco Schiro'
- Institut de Physique Theorique, Saint-Aubin, Essonne, France
- Ort: CFEL (Bldg. 99)
- Raum: Seminar Room IV, O1.111
- Gastgeber: Angel Rubio
We study the dynamics of the Fermi-Hubbard model driven by a time-periodic modulation of the interaction within nonequilibrium Dynamical Mean-Field Theory. For moderate interaction, we find clear evidence of thermalization to a genuine infinite-temperature state with no residual oscillations. Quite differently, in the strongly correlated regime, we find a quasi-stationary extremely long-lived state with oscillations synchronized with the drive (Floquet prethermalization). Remarkably, the nature of this state dramatically changes upon tuning the drive frequency. In particular, we show the existence of a critical frequency at which the system rapidly thermalizes despite the large interaction. We characterize this resonant thermalization and provide an analytical understanding in terms of a break down of the periodic Schrieffer-Wolff transformation.