Motion of dark solitons in trapped Bose-Einstein condensates
Condensed Matter
2009-10-31 v1 Pattern Formation and Solitons
Quantum Physics
Abstract
We use a multiple time scale boundary layer theory to derive the equation of motion for a dark (or `grey') soliton propagating through an effectively one-dimensional cloud of Bose-Einstein condensate, assuming only that the background density and velocity vary slowly on the soliton scale. We show that solitons can exhibit viscous or radiative acceleration (anti-damping), which we estimate as slow but observable on experimental time scales.
Keywords
Cite
@article{arxiv.cond-mat/0001360,
title = {Motion of dark solitons in trapped Bose-Einstein condensates},
author = {Th. Busch and J. R. Anglin},
journal= {arXiv preprint arXiv:cond-mat/0001360},
year = {2009}
}
Comments
5 pages, 1 figure, extended version of cond-mat/9809408, to appear in Phys. Rev. Lett