Suppression of inelastic collisions in atom waveguides

Vladimir Yurovsky, Yehuda Band

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Collisional deactivation is analyzed using a multichannel zero-range potential method. The deactivation products are associated to a set of open channels, while introduction of a closed channel leads to a Feshbach resonance, allowing control of elastic scattering. In the case of free space the deactivation rate coefficient has a finite zero-energy limit. It increases with the elastic scattering length, demonstrating also the effect of interference of open and closed channel deactivation. A tight confinement in atomic waveguides leads to a drastic change of the deactivation rate behavior. At large elastic scattering length, the rate coefficient decreases to zero at low collision energies. The present two-body analysis is in agreement with the many-body consideration of indistinguishable particles [1], being applicable to non-identical particles as well. The general behavior of two-body correlations [1] can be reproduced in the present two-body picture. 1. D. M. Gangardt and G. V. Shlyapnikov, Phys. Rev. Lett. 90, 010401 (2003).
Original languageEnglish
Title of host publicationAmerican Physical Society, 37th Meeting of the Division of Atomic, Molecular and Optical Physics, May 16-20, 2006
StatePublished - 2006

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