Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials
Other Condensed Matter
2009-11-13 v1 Disordered Systems and Neural Networks
Abstract
We study quantum transport of an interacting Bose-Einstein condensate in a two-dimensional disorder potential. In the limit of vanishing atom-atom interaction, a sharp cone in the angle-resolved density of the scattered matter wave is observed, arising from constructive interference between amplitudes propagating along reversed scattering paths. Weak interaction transforms this coherent backscattering peak into a pronounced dip, indicating destructive instead of constructive interference. We reproduce this result, obtained from the numerical integration of the Gross-Pitaevskii equation, by a diagrammatic theory of weak localization in presence of a nonlinearity.
Cite
@article{arxiv.0804.3723,
title = {Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials},
author = {Michael Hartung and Thomas Wellens and Cord A. Mueller and Klaus Richter and Peter Schlagheck},
journal= {arXiv preprint arXiv:0804.3723},
year = {2009}
}
Comments
4 pages, 4 figures