Manifestations of the Roton Mode in Dipolar Bose-Einstein Condensates
Other Condensed Matter
2010-02-08 v3
Abstract
We investigate the structure of trapped Bose-Einstein condensates (BECs) with long-range anisotropic dipolar interactions. We find that a small perturbation in the trapping potential can lead to dramatic changes in the condensate's density profile for sufficiently large dipolar interaction strengths and trap aspect ratios. By employing perturbation theory, we relate these oscillations to a previously-identified "roton-like" mode in dipolar BECs. The same physics is responsible for radial density oscillations in vortex states of dipolar BECs that have been predicted previously.
Keywords
Cite
@article{arxiv.0802.4097,
title = {Manifestations of the Roton Mode in Dipolar Bose-Einstein Condensates},
author = {Ryan M. Wilson and Shai Ronen and Han Pu and John L. Bohn},
journal= {arXiv preprint arXiv:0802.4097},
year = {2010}
}
Comments
4 pages, 3 figures, version accepted to PRL