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arXiv · 0901.4641

Stability and pairing in quasi-one-dimensional Bose-Fermi mixtures

F. M. Marchetti·Th. Jolicoeur·M. M. Parish
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Abstract

We consider a mixture of single-component bosonic and fermionic atoms in an array of coupled one-dimensional "tubes". For an attractive Bose-Fermi interaction, we show that the system exhibits phase separation instead of the usual collapse. Moreover, above a critical inter-tube hopping, all first-order instabilities disappear in both attractive and repulsive mixtures. The possibility of suppressing instabilities in this system suggests a route towards the realization of paired phases, including a superfluid of p-wave pairs unique to the coupled-tube system, and quantum critical phenomena.

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F. M. Marchetti, Th. Jolicoeur, M. M. Parish. 2009-09-05. Stability and pairing in quasi-one-dimensional Bose-Fermi mixtures. https://doi.org/10.1103/physrevlett.103.105304

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