Article (Scientific journals)
Breakdown of Anderson localization in the transport of Bose-Einstein condensates through one-dimensional disordered potentials
Dujardin, Julien; Engl, Thomas; Schlagheck, Peter
2016In Physical Review. A, Atomic, molecular, and optical physics, 93, p. 013612
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Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Dujardin, Julien ;  Université de Liège > Département de physique > Physique quantique statistique
Engl, Thomas
Schlagheck, Peter ;  Université de Liège > Département de physique > Physique quantique statistique
Language :
English
Title :
Breakdown of Anderson localization in the transport of Bose-Einstein condensates through one-dimensional disordered potentials
Publication date :
January 2016
Journal title :
Physical Review. A, Atomic, molecular, and optical physics
ISSN :
1050-2947
eISSN :
1094-1622
Publisher :
American Physical Society
Volume :
93
Pages :
013612
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Funders :
CÉCI - Consortium des Équipements de Calcul Intensif [BE]
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