Schmidt, R.; Rath, S.P.; Zwerger, W. - In: The European Physical Journal B - Condensed Matter and … 85 (2012) 11, pp. 1-6
We provide an exact solution of the Efimov spectrum in ultracold gases within the standard two-channel model for Feshbach resonances. It is shown that the finite range in the Feshbach coupling makes the introduction of an adjustable three-body parameter obsolete. The solution explains the...