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Inter-Condensate Tunneling in Bose-Einstein Condensates with Feshbach Resonances

Eddy Timmermans·Paolo Tommasini·Robin Cote·Mahir Hussein·Arthur Kerman
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Abstract

Recently, effects of Feshbach resonances in atom-atom interactions were observed by varying the external magnetic field of an atomic Bose-Einstein condensate (BEC). We point out that the quasi-bound molecules created in the intermediate state of the resonance can form a second, molecular condensate. The many-body state of the system is then a hybrid atomic/molecular condensate with inter-condensate tunneling of atom pairs. A sudden variation of the magnetic field results in oscillations of the number of atoms and molecules in their respective condensates, providing a signature of this novel type of quantum tunneling.

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Eddy Timmermans, Paolo Tommasini, Robin Cote, Mahir Hussein, Arthur Kerman. 1998-05-25. Inter-Condensate Tunneling in Bose-Einstein Condensates with Feshbach Resonances. https://arxiv.org/abs/cond-mat/9805323

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