Dynamically Generated Double Occupancy as a Probe of Cold Atom Systems
arXiv:0808.2350 · doi:10.1103/PhysRevLett.102.065301
Abstract
The experimental investigation of quantum phases in optical lattice systems provides major challenges. Recently, dynamical generation of double occupancy via modulation of the hopping amplitude t has been used to characterize the strongly correlated phase of fermionic atoms. Here, we want to validate this experimental technique with a theoretical study of the driven Hubbard model using analytic methods. We find that conclusive evidence for a Mott phase can be inferred from such a measurement, provided that sufficiently low temperatures kT<<t can be reached.
5 pages, 3 figures
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