Analysis of g_2 for the cold-collision frequency shift in the hydrogen condensate experiments
Condensed Matter
2009-10-31 v3
Abstract
We compute an approximate set of longitudinal quasiparticle modes for a hydrogen condensate as produced in the MIT experiments. An expansion in quasiparticles using a simple one-dimensional Bogoliubov picture shows however that at the high temperatures (\approx 44muK) and in the very shallow trap employed (omega_z = 2\pi\times 10.2Hz) the contribution to the density from the quasiparticles is about 20% of that from the condensate mode, leading to an effective $ g_2(x,x) which varies between 1 and 3 depending on the position in the condensate.
Keywords
Cite
@article{arxiv.cond-mat/0009371,
title = {Analysis of g_2 for the cold-collision frequency shift in the hydrogen condensate experiments},
author = {C. W. Gardiner and A. S. Bradley},
journal= {arXiv preprint arXiv:cond-mat/0009371},
year = {2009}
}
Comments
Revised version with corrections, which do not significantly affect conclusions. Should be read in conjunction with the new paper cond-mat/0108451. 10 pages J Phys B latex plus 3 postscript figures