Bose-Einstein Condensation at a Helium Surface
凝聚态物理
2009-11-07 v1
摘要
Path Integral Monte Carlo was used to calculate the Bose-Einstein condensate fraction at the surface of a helium film at , as a function of density. Moving from the center of the slab to the surface, the condensate fraction was found to initially increase with decreasing density to a maximum value of 0.9 before decreasing. Long wavelength density correlations were observed in the static structure factor at the surface of the slab. Finally, a surface dispersion relation was calculated from imaginary-time density-density correlations.
引用
@article{arxiv.cond-mat/0201477,
title = {Bose-Einstein Condensation at a Helium Surface},
author = {E. W. Draeger and D. M. Ceperley},
journal= {arXiv preprint arXiv:cond-mat/0201477},
year = {2009}
}
备注
8 pages, 5 figures