We consider a quantum model of two-channel scattering to describe the mechanism of a Feshbach resonance. We perform a rigorous analysis in order to count and localize the energy resonances in the perturbative regime, i.e., for small inter-channel coupling, and in the nonperturbative one. We provide an expansion of the effective scattering length near the resonances, via a detailed study of an effective Lippmann– Schwinger equation with energy-dependent potential.
A Quantum Model of Feshbach Resonances
Finco D;
2019-01-01
Abstract
We consider a quantum model of two-channel scattering to describe the mechanism of a Feshbach resonance. We perform a rigorous analysis in order to count and localize the energy resonances in the perturbative regime, i.e., for small inter-channel coupling, and in the nonperturbative one. We provide an expansion of the effective scattering length near the resonances, via a detailed study of an effective Lippmann– Schwinger equation with energy-dependent potential.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
2019_Article_AQuantumModelOfFeshbachResonan.pdf
non disponibili
Dimensione
788.05 kB
Formato
Adobe PDF
|
788.05 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
