Soliton-sound interactions in quasi-one-dimensional Bose-Einstein condensates
Condensed Matter
2009-11-07 v2
Abstract
Longitudinal confinement of dark solitons in quasi-one-dimensional Bose-Einstein condensates leads to sound emission and reabsorption. We perform quantitative studies of the dynamics of a soliton oscillating in a tight dimple trap, embedded in a weaker harmonic trap. The dimple depth provides a sensitive handle to control the soliton-sound interaction. In the limit of no reabsorption, the power radiated is found to be proportional to the soliton acceleration squared. An experiment is proposed to detect sound emission as a change in amplitude and frequency of soliton oscillations.
Cite
@article{arxiv.cond-mat/0212278,
title = {Soliton-sound interactions in quasi-one-dimensional Bose-Einstein condensates},
author = {N. G. Parker and N. P. Proukakis and M. Leadbeater and C. S. Adams},
journal= {arXiv preprint arXiv:cond-mat/0212278},
year = {2009}
}
Comments
4 pages, 5 figures. Revised manuscript, Phys. Rev. Lett. accepted