Tunneling theory of two interacting atoms in a trap

Abstract

A theory for the tunneling of one atom out of a trap containing two interacting cold atoms is developed. The quasiparticle wave function, dressed by the interaction with the companion atom in the trap, replaces the non-interacting orbital at resonance in the tunneling matrix element. The computed tunneling time for two 6Li atoms agrees with recent experimental results [G. Zuern, F. Serwane, T. Lompe, A. N. Wenz, M. G. Ries, J. E. Bohn, and S. Jochim, arXiv:1111.2727], unveiling the `fermionization' of the wave function and a novel two-body effect.

RevTeX 4.1, 5 pages, 4 pdf figures. In this revised version the effects of trap anharmonicity have been taken into account (cf. Fig. 2) and new references have been added. To appear in Physical Review Letters

References in corpus (7)

• Many-Body Physics with Ultracold Gases
• Theory of ultracold Fermi gases
• Fermionization of two distinguishable fermions
• Decay by tunneling of Bosonic and Fermionic Tonks-Girardeau Gases
• Imaging quasi-particle wavefunctions in quantum dots via tunneling spectroscopy
• Binding between two-component bosons in one dimension
• Visualizing electron correlation by means of ab-initio scanning tunneling spectroscopy images of single molecules

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