Phase diagram of a dilute fermion gas with density imbalance

Details Phase diagram of a dilute fermion gas with density imbalance Phase diagram of a dilute fermion gas with density imbalance

2006-09-27

arxiv.org/abs/cond-mat/0609692v1

Physics

Condensed Matter

Other Condensed Matter

Proceeding for M$^2$S-HTSC VIII meeting, July 9-14 2006, Dresden; To appear in Physica C

Scientific paper

10.1016/j.physc.2007.04.192

We map out the phase diagram of a dilute two-component atomic fermion gas with unequal populations and masses under a Feshbach resonance. As in the case of equal masses, no uniform phase is stable for an intermediate coupling regime. For majority component heavier, the unstable region moves towards the BEC side. When the coupling strength is increased from the normal phase, there is an increased parameter space where the transition is into the FFLO state. The converse is true if the majority is light.

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