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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2015

Ultracold-atom collisions in atomic waveguides : A two-channel analysis

Résumé

Low dimensional behavior of two ultra-cold atoms trapped in two-and one-dimensional waveguides is investigated in the vicinity of a magnetic Feshbach resonance. A quantitative two-channel model for the Feshbach mechanism is used allowing an exhaustive analysis of low-dimensional resonant scattering behavior and of the confinement induced bound states. The role of the different parameters of the resonance is depicted in this context. Results are compared with the ones of the zero-range approach. The relevance of the effective range approximation in low dimensions is studied. Examples of known resonances are used to illustrate the bound state properties.
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Dates et versions

hal-01095531 , version 1 (15-12-2014)
hal-01095531 , version 2 (16-04-2015)

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Tom Kristensen, Ludovic Pricoupenko. Ultracold-atom collisions in atomic waveguides : A two-channel analysis. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2015, 91 (Issue 4), pp.042703. ⟨10.1103/PhysRevA.91.042703⟩. ⟨hal-01095531v2⟩
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