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

by S. Knoop, F. Ferlaino, M. Berninger, M. Mark, H.-C. Nägerl, R. Grimm

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.

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Reference:

Observation of an Efimov resonance in an ultracold mixture of atoms and weakly bound dimers,
S. Knoop, F. Ferlaino, M. Berninger, M. Mark, H.-C. Nägerl, R. Grimm,
Journal of Physics: Conference Series, 194, 012064, 2009.

Bibtex Entry:

@article{1742-6596-194-1-012064,

  title = {Observation of an Efimov resonance in an ultracold mixture of atoms and weakly bound dimers}, 

  author = {Knoop, S. and Ferlaino, F. and Berninger, M. and Mark, M. and Nägerl, H.-C. and Grimm, R.},

  journal = {Journal of Physics: Conference Series},

  volume = {194},

  number = {1},

  pages = {012064},

  year = {2009},

  month = {Jul},

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.},

  publisher = {IOP Publishing}, 

  doi = {10.1088/1742-6596/194/1/012064},  

  url = {http://stacks.iop.org/1742-6596/194/i=1/a=012064},

  arXiv = {http://arxiv.org/abs/0907.4510}

}