Bose-Einstein Condensation Temperature of Dipolar Gas in Anisotropic Harmonic Trap
Abstract
We consider a dilute gas of dipole moments in an arbitrary harmonic trap and treat both the short-range, isotropic delta-interaction and the long-range, anisotropic dipole-dipole interaction perturbatively. With this we calculate the leading shift of the critical temperature with respect to that of an ideal gas as a function of the relative orientation of the dipole moments with respect to the harmonic trap axes. In particular, we determine those magic angles, where the dipolar shift of the Bose-Einstein condensation temperature vanishes. Furthermore, we show for the parameters of the ongoing 52Cr-experiment in Stuttgart that this dipolar shift can be enhanced by increasing the number of particles, the geometrical mean trap frequency, and the anisotropy of the trap.
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Cite
@article{arxiv.cond-mat/0609374,
title = {Bose-Einstein Condensation Temperature of Dipolar Gas in Anisotropic Harmonic Trap},
author = {Konstantin Glaum and Axel Pelster},
journal= {arXiv preprint arXiv:cond-mat/0609374},
year = {2009}
}
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Author information under http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir