Using modified Gaussian distribution to study the physical properties of one and two-component ultracold atoms
Abstract
Gaussian distribution is commonly used as a good approximation to study the trapped one-component Bose-condensed atoms with relatively small nonlinear effect. It is not adequate in dealing with the one-component system of large nonlinear effect, nor the two-component system where phase separation exists. We propose a modified Gaussian distribution which is more effective when dealing with the one-component system with relatively large nonlinear terms as well as the two-component system. The modified Gaussian is also used to study the breathing modes of the two-component system, which shows a drastic change in the mode dispersion at the occurrence of the phase separation. The results obtained are in agreement with other numerical results.
Keywords
Cite
@article{arxiv.cond-mat/0612508,
title = {Using modified Gaussian distribution to study the physical properties of one and two-component ultracold atoms},
author = {C. C. Huang and W. C. Wu},
journal= {arXiv preprint arXiv:cond-mat/0612508},
year = {2009}
}
Comments
7 pages, 7 figures, accepted for publication in Phys. Rev. A