%0 Journal Article
%T Three-body recombination at vanishing scattering lengths in an ultracold Bose gas
%A Zav Shotan
%A Olga Machtey
%A Servaas Kokkelmans
%A Lev Khaykovich
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevLett.113.053202
%X We report on measurements of three-body recombination rates in an ultracold gas of $^7$Li atoms in the extremely nonuniversal regime where the two-body scattering length vanishes. We show that the rate is well defined and can be described by two-body parameters only: the scattering length $a$ and the effective range $R_e$. We find the rate to be energy independent, and, by connecting our results with previously reported measurements in the universal limit, we cover the behavior of the three-body recombination in the whole range from weak to strong two-body interactions. We identify a nontrivial magnetic field value in the nonuniversal regime where the rate should be strongly reduced.
%U http://arxiv.org/abs/1404.3575v2