Observation of an Efimov resonance in an ultracold mixture of atoms and weakly bound dimers

Abstract

We discuss our recent observation of an atom-dimer Efimov resonance in an ultracold mixture of Cs atoms and Cs_2 Feshbach molecules [Nature Phys. 5, 227 (2009)]. We review our experimental procedure and present additional data involving a non-universal g-wave dimer state, to contrast our previous results on the universal s-wave dimer. We resolve a seeming discrepancy when quantitatively comparing our experimental findings with theoretical results from effective field theory.

Conference Proceeding ICPEAC 2009 Kalamazoo, to appear in Journal of Physics: Conference Series

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Cited by in corpus (3)

• Universal Dimer in a Collisionally Opaque Medium: Experimental Observables and Efimov Resonances
• Zero-temperature phase diagram of Yukawa bosons
• Exactly solvable models for multiatomic molecular Bose-Einstein condensates