Evolution of Hard-Core Bosons in a Time-Dependent Trap

ORAL

Abstract

We present a study of the time evolution of hard-core bosons (HCB) in a one-dimensional, time-varying optical trap. Previous results have shown that one-dimensional HCBs can form superfluid and Mott-insulator phases. Using numerical techniques in the Bose-Hubbard model, we explore different types of time variations, such as sinusoidally varying trap curvature, using either initial configurations (filling {\&} trap curvature) of a superfluid or a Mott-insulator. ~When the curvature of the optical trap is suddenly increased, we observe a ``melting'' of the Mott-insulator. The approximate numerical technique used to study time-varying traps is discussed.

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Authors

  • Aditya Raghavan

    Department of Physics and Astronomy, University of Southern California

  • Marcos Rigol

    University of Southern California, USC, Department of Physics and Astronomy, University of Southern California

  • Stephan Haas

    University of Southern California, Department of Physics and Astronomy, University of Southern California, Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484, USC Dept. of Physics and Astronomy