In the scattering of ultracold atoms by absorbing nanostructures, physical observables such as the cross section are dominated by the threshold behaviour of scattering phase shifts at small angular momenta.
This threshold behaviour was determined for attractive and repulsive potentials in two and three dimensions, and analytical results were derived for the case of homogeneous potentials by means of an effective-range theory and the theory of Jost-functions. The scattering of ultracold helium and sodium atoms by an absorbing nanosphere was investigated as an application.
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In the scattering of ultracold atoms by absorbing nanostructures, physical observables such as the cross section are dominated by the threshold behaviour of scattering phase shifts at small angular momenta.
This threshold behaviour was determined for attractive and repulsive potentials in two and three dimensions, and analytical results were derived for the case of homogeneous potentials by means of an effective-range theory and the theory of Jost-functions. The scattering of ultracold helium a...
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