Depletion of a Bose-Einstein condensate by laser-iduced dipole-dipole interactions
Soft Condensed Matter
2009-11-10 v2
Abstract
We study a gaseous Bose-Einstein condensate with laser-induced dipole-dipole interactions using the Hartree-Fock-Bogoliubov theory within the Popov approximation. The dipolar interactions introduce long-range atom-atom correlations, which manifest themselves as increased depletion at momenta similar to that of the laser wavelength, as well as a "roton" dip in the excitation spectrum. Surprisingly, the roton dip and the corresponding peak in the depletion are enhanced by raising the temperature above absolute zero.
Keywords
Cite
@article{arxiv.cond-mat/0310672,
title = {Depletion of a Bose-Einstein condensate by laser-iduced dipole-dipole interactions},
author = {I. E. Mazets and D. H. J. O'Dell and G. Kurizki and N. Davidson and W. P. Schleich},
journal= {arXiv preprint arXiv:cond-mat/0310672},
year = {2009}
}
Comments
10 pages, 6 figures