Are non-equilibrium Bose-Einstein condensates superfluid?
Mesoscale and Nanoscale Physics
2010-01-06 v1 Quantum Gases
Abstract
We theoretically study the superfluidity properties of a non-equilibrium Bose-Einstein condensate of exciton-polaritons in a semiconductor microcavity. The dynamics of the condensate is described at mean-field level in terms of a modified Complex Ginzburg Landau equation. A generalized Landau criterion is formulated which estimates the onset of the drag force on a small moving defect. Metastability of supercurrents in multiply connected geometries persists up to higher flow speeds.
Cite
@article{arxiv.1001.0660,
title = {Are non-equilibrium Bose-Einstein condensates superfluid?},
author = {Michiel Wouters and Iacopo Carusotto},
journal= {arXiv preprint arXiv:1001.0660},
year = {2010}
}
Comments
4 pages, 5 figures