Boson-fermion mixtures inside an elongated cigar-shaped trap

Details Boson-fermion mixtures inside an elongated cigar-shaped trap Boson-fermion mixtures inside an elongated cigar-shaped trap

2005-05-17

arxiv.org/abs/cond-mat/0505412v2

Physics

Condensed Matter

Other Condensed Matter

12 pages, 6 figures

Scientific paper

10.1088/0953-4075/38/16/006

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.

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