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arXiv · 1811.12826

Quantum Simulation Meets Nonequilibrium Dynamical Mean Field Theory: Exploring the Periodically Driven, Strongly Correlated Fermi-Hubbard Model

Kilian Sandholzer·Yuta Murakami·Frederik Görg·Joaquín Minguzzi·Michael Messer·Rémi Desbuquois·Martin Eckstein·Philipp Werner·Tilman Esslinger
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Abstract

We perform an ab-initio comparison between nonequilibrium dynamical mean-field theory and optical lattice experiments by studying the time evolution of double occupations in the periodically driven Fermi-Hubbard model. For off-resonant driving, the range of validity of a description in terms of an effective static Hamiltonian is determined and its breakdown due to energy absorption close to resonance is demonstrated. For near-resonant driving, we investigate the response to a change in driving amplitude and discover an asymmetric excitation spectrum with respect to the detuning. In general, we find good agreement between experiment and theory, which cross-validates the experimental and numerical approaches in a strongly-correlated nonequilibrium system.

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Kilian Sandholzer, Yuta Murakami, Frederik Görg, Joaquín Minguzzi, Michael Messer, Rémi Desbuquois, Martin Eckstein, Philipp Werner, Tilman Esslinger. 2019-12-20. Quantum Simulation Meets Nonequilibrium Dynamical Mean Field Theory: Exploring the Periodically Driven, Strongly Correlated Fermi-Hubbard Model. https://doi.org/10.1103/physrevlett.123.193602

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