Strongly-resonant p-wave superfluids

Details Strongly-resonant p-wave superfluids Strongly-resonant p-wave superfluids

2007-05-30

arxiv.org/abs/0705.4460v1

Phys. Rev. Lett. 99, 210402 (2007)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.99.210402

We study theoretically a dilute gas of identical fermions interacting via a p-wave resonance. We show that, depending on the microscopic physics, there are two distinct regimes of p-wave resonant superfluids, which we term "weak" and "strong". Although expected naively to form a BCS-BEC superfluid, a strongly-resonant p-wave superfluid is in fact unstable towards the formation of a gas of fermionic triplets. We examine this instability and estimate the lifetime of the p-wave molecules due to the collisional relaxation into triplets. We discuss consequences for the experimental achievement of p-wave superfluids in both weakly- and strongly-resonant regimes.

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