Coherent quench dynamics in the one-dimensional Fermi-Hubbard model
arXiv:1408.1700 · doi:10.1103/PhysRevA.90.031602
Abstract
Recently, it has been shown that the momentum distribution of a metallic state of fermionic atoms in a lattice Fermi-Bose mixture exhibits coherent oscillations after a global quench that suppresses tunneling. The oscillation period is determined by the Fermi-Bose interaction strength. Here we show that similar dynamics occurs in the fermionic Hubbard model when we quench a noninteracting metallic state by introducing a Hubbard interaction and suppressing tunneling. The period is determined primarily by the interaction strength. Conversely, we show that one can accurately determine the Hubbard interaction strength from the oscillation period, taking into account corrections from any small residual tunneling present in the final Hamiltonian. Such residual tunneling shortens the period and damps the oscillations, the latter being visible in the Fermi-Bose experiment.
arXiv comment4 pages + 4 pages for supplementary material, 2 figures. Published version
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- Real-Time Evolution in the Hubbard Model with Infinite Repulsion
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- Temporal decay of Neel order in the one-dimensional Fermi-Hubbard model
- Hubbard physics with Rydberg atoms: using a quantum spin simulator to simulate strong fermionic correlations