Doublon production rate in modulated optical lattices
arXiv:1106.1333 · doi:10.1103/PhysRevA.85.053601
Abstract
We study theoretically lattice modulation experiments with ultracold fermions in optical lattices. We focus on the regime relevant to current experiments when interaction strength is larger than the bandwidth and temperature is higher than magnetic superexchange energy. We obtain analytical expressions for the rate of doublon production as a function of modulation frequency, filling factor, and temperature. We use local density approximation to average over inhomogeneous density for atoms in a parabolic trap and find excellent agreement with experimentally measured values. Our results suggest that lattice modulation experiments can be used for thermometry of strongly interacting fermionic ensembles in optical lattices.
7 pages, 6 figures, final version
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- Ion Impact Induced Ultrafast Electron Dynamics in Correlated Materials and Finite Graphene Clusters
- Spin correlations and doublon production rate for fermionic atoms in modulated optical lattices
- Theoretical Description of Coherent Doublon Creation via Lattice Modulation Spectroscopy
- Thermometry of ultracold fermions by (super)lattice modulation spectroscopy
- Feshbach modulation spectroscopy
- Finite temperature dynamical properties of SU() fermionic Hubbard models in the spin-incoherent regime
- Time dependent local potential in a Tomonaga-Luttinger liquid
- Multiple particle-hole pair creation in the Fermi-Hubbard model by a pump laser