Collisionless modes of a trapped Bose gas
Statistical Mechanics
2014-10-13 v1
Abstract
We calculate the excitation frequencies of the m=0 monopole and m=2 quadrupole modes in the collisionless regime by solving a non-linear Schroedinger equation for the condensate, coupled to a collisionless Boltzmann equation for the quasiparticles. Since the dynamics of the noncondensate cloud is also taken into account, the theory satisfies the Kohn theorem. The spectrum turns out to be strongly temperature dependent and we compare our results with experiment.
Keywords
Cite
@article{arxiv.cond-mat/9807051,
title = {Collisionless modes of a trapped Bose gas},
author = {M. J. Bijlsma and H. T. C. Stoof},
journal= {arXiv preprint arXiv:cond-mat/9807051},
year = {2014}
}
Comments
6 pages of LaTeX and 1 postscript figure. Contribution to the meeting `New directions in atomic phycics' held in Cambridge this month