Interaction-induced decoherence of atomic Bloch oscillations
arXiv:cond-mat/0305037 · doi:10.1103/PhysRevLett.91.253002
Abstract
We show that the energy spectrum of the Bose-Hubbard model amended by a static field exhibits Wigner-Dyson level statistics. In itself a characteristic signature of quantum chaos, this induces the irreversible decay of Bloch oscillations of cold, interacting atoms loaded into an optical lattice, and provides a Hamiltonian model for interaction induced decoherence.
revtex4, figure 3 is substituted, small changes in the text
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