HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Propagation of collective pair excitations in disordered Bose superfluids

Abstract : We study the effect of disorder on the propagation of collective excitations in a disordered Bose superfluid. We incorporate local density depletion induced by strong disorder at the meanfield level, and formulate the transport of the excitations in terms of a screened scattering problem. We show that the competition of disorder, screening, and density depletion induces a strongly non-monotonic energy dependence of the disorder parameter. In three dimensions, it results in a rich localization diagram with four different classes of mobility spectra, characterized by either no or up to three mobility edges. Implications on experiments with disordered ultracold atoms are discussed.
Keywords : 6785-d 0570Ln 0530Jp 0560Gg
Complete list of metadata

Cited literature [35 references]  Display  Hide  Download

Contributor : Lih-King Lim Connect in order to contact the contributor
Submitted on : Wednesday, April 22, 2015 - 9:56:32 AM
Last modification on : Monday, October 11, 2021 - 2:18:11 PM
Long-term archiving on: : Tuesday, April 18, 2017 - 10:49:44 PM


Files produced by the author(s)


  • HAL Id : hal-01143356, version 1
  • ARXIV : 1504.06086


Samuel Lellouch, Lih-King Lim, Laurent Sanchez-Palencia. Propagation of collective pair excitations in disordered Bose superfluids. Physical Review A, American Physical Society, 2015, 92, pp.043611. ⟨hal-01143356⟩



Record views


Files downloads