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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2009

Quantum theory of ultracold atom-ion collisions

Résumé

We study atom-ion scattering in the ultracold regime. To this aim, an analytical model based on the multichannel quantum-defect formalism is developed and compared to close-coupled numerical calculations. We investigate the occurrence of magnetic Feshbach resonances, focusing on the specific Ca+40+Na system. The presence of several resonances at experimentally accessible magnetic fields should allow the atom-ion interaction to be precisely tuned. A fully quantum-mechanical study of charge-exchange processes shows that charge-exchange rates should remain small even in the presence of resonance effects. Most of our results can be cast in a system-independent form and are important for the realization of charge-neutral ultracold systems.

Dates et versions

hal-00667346 , version 1 (07-02-2012)

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Zbigniew Idziaszek, Tommaso Calarco, Paul S. Julienne, Andrea Simoni. Quantum theory of ultracold atom-ion collisions. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2009, 79 (1), pp.10702. ⟨10.1103/PHYSREVA.79.010702⟩. ⟨hal-00667346⟩
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