Title: Ultracold heteronuclear three-body systems: How diabaticity limits the universality of recombination into shallow dimers,
Abstract: The mass-imbalanced three-body recombination process that forms a shallow
dimer is shown to possess a rich Efimov-Stückelberg landscape, with
corresponding spectra that differ fundamentally from the homonuclear case. A
semi-analytical treatment of the three-body recombination predicts an unusual
spectra with intertwined resonance peaks and minima, and yields in-depth
insight into the behavior of the corresponding Efimov spectra. In particular,
the patterns of the Efimov-Stückelberg landscape are shown to depend
inherently on the degree of diabaticity of the three-body collisions, which
strongly affects the universality of the heteronuclear Efimov states.