Localized states and interaction induced delocalization in Bose gases with quenched disorder
arXiv:0808.2565 · doi:10.1209/0295-5075/85/30002
Abstract
Very diluted Bose gas placed into a disordered environment falls into a fragmented localized state. At some critical density the repulsion between particles overcomes the disorder. The gas transits into a coherent superfluid state. In this article the geometrical and energetic characteristics of the localized state at zero temperature and the critical density at which the quantum phase transition from the localized to the superfluid state proceeds are found.
17 pages, 5 figure
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- Thermalization of matter waves in speckle potentials
- Correlation function of weakly interacting bosons in a disordered lattice
- Density of states in an optical speckle potential
- Propagation of collective pair excitations in disordered Bose superfluids
- Cooper pairs under the action of disorder and strong magnetic field
- Effects of disorder on quantum fluctuations and superfluid density of a Bose-Einstein condensate in a two-dimensional optical lattice
- Josephson relation for disordered superfluids
- Variational approach for Bose-Einstein condensates in strongly disordered traps
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- Bose-Einstein Condensate dark matter models in the presence of baryonic matter and random confining potentials
- Instanton theory for bosons in disordered speckle potential
- Bogoliubov approach to superfluid-Bose glass phase transition of a disordered Bose-Hubbard Model in weakly interacting regime
- Finite-size scaling analysis of localization transitions in the disordered two-dimensional Bose-Hubbard model within the fluctuation operator expansion method