Integrable two-channel p_x+ip_y-wave superfluid model

Details Integrable two-channel p_x+ip_y-wave superfluid model Integrable two-channel p_x+ip_y-wave superfluid model

2011-04-19

arxiv.org/abs/1104.3766v1

Phys.Rev.B84:100503,2011

Physics

Condensed Matter

Quantum Gases

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.84.100503

We present a new two-channel integrable model describing a system of spinless fermions interacting through a p-wave Feshbach resonance. Unlike the BCS-BEC crossover of the s-wave case, the p-wave model has a third order quantum phase transition. The critical point coincides with the deconfinement of a single molecule within a BEC of bound dipolar molecules. The exact many-body wavefunction provides a unique perspective of the quantum critical region suggesting that the size of the condensate wavefunction, that diverges logarithmically with the chemical potential, could be used as an experimental indicator of the phase transition.

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