Many-body aspects of coherent atom-molecule oscillations

Details Many-body aspects of coherent atom-molecule oscillations Many-body aspects of coherent atom-molecule oscillations

2003-02-14

arxiv.org/abs/cond-mat/0302304v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, revtex 4, v2: minor changes: corrected some typos/omissions, Discarded use of the term 'Rabi frequency' to avoid conf

Scientific paper

10.1103/PhysRevLett.91.150405

We study the many-body effects on coherent atom-molecule oscillations by means of an effective quantum field theory that describes Feshbach-resonant interactions in Bose gases in terms of an atom-molecule hamiltonian. We determine numerically the many-body corrections to the oscillation frequency for various densities of the atomic condensate. We also derive an analytic expression that approximately describes both the density and magnetic-field dependence of this frequency near the resonance. We find excellent agreement with experiment.

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