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Atom-molecule coexistence and collective dynamics near a feshbach resonance of cold fermions


, : Atom-molecule coexistence and collective dynamics near a feshbach resonance of cold fermions. Physical Review Letters 93(13): 130403-130403

Degenerate Fermi gas interacting with molecules near a Feshbach resonance is unstable with respect to the formation of a mixed state, in which atoms and molecules coexist as a coherent superposition. A theory of this state is developed using a mapping to the Dicke model, treating the molecular field in the single mode approximation. The results are accurate in the strong coupling regime relevant for current experimental efforts. The exact solution of the Dicke model is exploited to study stability, phase diagram, and nonadiabatic dynamics of the molecular field in the mixed state.

US$19.90

PMID: 15524685

DOI: 10.1103/PhysRevLett.93.130403


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