2007/10/31 by P. Buonsante, Pierfrancesco Buonsante, Sandro Wimberger · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum many-body systems #Quantum, superfluid, helium dynamics #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.1103/physreva.77.041606
published as Phys. Rev. A 77, 041606(R) (2008) · 4 pages, 4 figures (improved version), to be published in PRA
arxiv created 2008/04/08 · openalex publication_date 2008/04/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Going beyond the currently investigated regimes in experiments on quantum transport of ultracold atoms in disordered potentials, we predict a crossover between regular and quantum-chaotic dynamics when varying the strength of disorder. Our spectral approach is based on the Bose-Hubbard model describing interacting atoms in deep random potentials. The predicted crossover from localized to diffusive dynamics depends on the simultaneous presence of interactions and disorder and can be verified in the laboratory by monitoring the evolution of typical experimental initial states.