Dujardin, Julien and Engl, Thomas and Schlagheck, Peter (2016) Breakdown of Anderson localization in the transport of Bose-Einstein condensates through one-dimensional disordered potentials. PHYSICAL REVIEW A, 93 (1). ISSN 2469-9926, 2469-9934
Full text not available from this repository.Abstract
We study the transport of an interacting Bose-Einstein condensate through a 1D correlated disorder potential. We use for this purpose the truncated Wigner method, which is, as we show, corresponding to the diagonal approximation of a semiclassical van Vleck-Gutzwiller representation of this many-body transport process. We also argue that semiclassical corrections beyond this diagonal approximation are vanishing under disorder average, thus confirming the validity of the truncated Wigner method in this context. Numerical calculations show that, while for weak atom-atom interaction strengths Anderson localization is preserved with a slight modification of the localization length, for larger interaction strengths a crossover to a delocalized regime exists due to inelastic scattering. In this case, the transport is fully incoherent.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRUNCATED WIGNER METHOD; QUANTUM TRANSPORT; CHAOTIC SYSTEMS; MATTER-WAVES; SHOT-NOISE; GAS; SCATTERING; LATTICES; SPECKLE; LASER; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Mar 2019 09:28 |
| Last Modified: | 13 Mar 2019 09:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2546 |
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