Three-body recombination at vanishing scattering lengths in an ultracold bose gas

Zav Shotan, Olga Machtey, Servaas Kokkelmans, Lev Khaykovich

Research output: Contribution to journalArticlepeer-review


We report on measurements of three-body recombination loss rates in an ultracold gas of Li7 atoms in the extremely nonuniversal regime where the two-body scattering length vanishes. We show that the loss rate coefficient is well defined and can be described by two-body parameters only: the scattering length a and the effective range Re. 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 rate 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 suppressed.

Original languageEnglish
Article number053202
JournalPhysical Review Letters
Issue number5
StatePublished - 1 Aug 2014

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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