Multiple particle-hole pair creation in the harmonically driven Fermi-Hubbard model

We study the Fermi-Hubbard model in the strongly correlatedMott phase under the influence of a harmonically oscillating hopping rate J (t) = J0 + Delta J cos(omega t). Apart from the well-known fundamental resonance, where the frequency. of this oscillation equals (or a little exceeds) theMott gap, we also find higher-order resonances where multiple particle-hole pairs are created when. is near an integer multiple of the gap. These findings should be relevant for experimental realizations such as ultracold fermionic atoms in optical lattices or pump-probe experiments using laser pulses incident on correlated electrons in solid-state materials.