Pairing and condensation in a resonant Bose-Fermi mixture

Details Pairing and condensation in a resonant Bose-Fermi mixture Pairing and condensation in a resonant Bose-Fermi mixture

2010-01-12

arxiv.org/abs/1001.1971v1

Phys. Rev. A 81, 051605(R) (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 4 figures

Scientific paper

10.1103/PhysRevA.81.051605

We study by diagrammatic methods a mixture of single-component bosons and fermions, with boson-fermion coupling tuned by a Fano-Feshbach resonance. For increasing coupling, the growing boson-fermion pairing correlations progressively reduce the boson condensation temperature and make it eventually vanish at a critical coupling. Such quantum critical point depends very weakly on the population imbalance and for vanishing boson densities coincides with that found for the polaron-molecule transition in a strongly imbalanced Fermi gas, thus bridging two quite distinct physical systems.

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