Boson-fermion mixtures inside an elongated cigar-shaped trap
Abstract
We present mean-field calculations of the equilibrium state in a gaseous mixture of bosonic and spin-polarized fermionic atoms with repulsive or attractive interspecies interactions, confined inside a cigar-shaped trap under conditions such that the radial thickness of the two atomic clouds is approaching the magnitude of the s-wave scattering lengths. In this regime the kinetic pressure of the fermionic component is dominant. Full demixing under repulsive boson-fermion interactions can occur only when the number of fermions in the trap is below a threshold, and collapse under attractive interactions is suppressed within the range of validity of the mean-field model. Specific numerical illustrations are given for values of system parameters obtaining in 7Li-6Li clouds.
Cite
@article{arxiv.cond-mat/0505412,
title = {Boson-fermion mixtures inside an elongated cigar-shaped trap},
author = {Z. Akdeniz and P. Vignolo and M. P. Tosi},
journal= {arXiv preprint arXiv:cond-mat/0505412},
year = {2009}
}
Comments
12 pages, 6 figures