Berlin 2008 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 15: Controlling Dirty Bosons: Disorder Effects on BECs

DY 15.7: Vortrag

Dienstag, 26. Februar 2008, 16:00–16:15, MA 001

Many-body diffusion in disordered potentials — •Sandro Wimberger — Institut für Theoretische Physik, Universität Heidelberg, D-69120 Heidelberg

Ongoing experiments with Bose-Einstein condensates are studying the quantum transport of ultracold atoms in disordered potentials. Going beyond the currently investigated regimes, we predict a crossover between regular and quantum chaotic dynamics as a function of the disorder strength. Our spectral approach is based on the Bose-Hubbard model describing the motion of strongly interacting bosonic atoms in deep potentials. Our statistical predictions on the spectral properties are readily observable by monitoring the evolution of typical experimental initial states.