Density wave packets of ultracold atoms in an optical lattice with the adaptive t-DMRG

ORAL

Abstract

We investigate the propagation of wave packets in systems of ultracold atoms in an optical lattice with the help of the adaptive time-dependent density-matrix renormalization-group method (adaptive t-DMRG). We discuss the dependence of the velocity, in particular of the sound velocity, on the interaction strength and the height of the perturbation in a quasiexact calculation.

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Authors

  • Corinna Kollath

  • Ulrich Schollw\"ock

    • RWTH Aachen

  • Jan von Delft

    • Physics Department and Center for Nanoscience, LMU Munchen, 80333 Munchen, Germany
    • LMU Muenchen
    • University of Munich

  • Wilhelm Zwerger

    • Technical University Munich