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Analytical model of overlapping Feshbach resonances
Krzysztof Jachymski, Paul S. Julienne
Feshbach resonances in ultracold collisions often result from an interplay between many collision channels. Simple two-channel models can be introduced to capture the basic feature…
Feshbach resonances in a nonseparable trap
Krzysztof Jachymski, Zbigniew Idziaszek, Tommaso Calarco
We consider a pair of atoms in an arbitrary trapping potential in the presence of magnetically tunable Feshbach resonance. We find the energy levels and occupation of the bound mol…
Quantum theory of reactive collisions for 1/r^n potentials
Krzysztof Jachymski, Michal Krych, Paul S. Julienne +1
We develop a general quantum theory for reactive collisions involving power-law potentials (-1/r^n) valid from the ultracold up to the high-temperature limit. Our quantum defect fr…