Near-threshold Feshbach resonances
27.07.2012 at 10:15
Feshbach resonances have become the major tool for controlling interatomic interactions in the physics of ultracold quantum gases. For deep interatomic potentials with attractive tails, we present an energy-independent parametrization of such a resonance to reveal its impact on the scattering properties as well as on the bound state spectrum. Furthermore, this parametrization provides an explicit separation of channel-coupling effects from the influence of "background" properties of the uncoupled system.
A449 - Theresienstr. 37