| Issue |
EPL
Volume 86, Number 5, June 2009
|
|
|---|---|---|
| Article Number | 53003 | |
| Number of page(s) | 5 | |
| Section | Atomic, Molecular and Optical Physics | |
| DOI | https://doi.org/10.1209/0295-5075/86/53003 | |
| Published online | 24 June 2009 | |
Resonant atom-dimer relaxation in ultracold atoms
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn - 53115 Bonn, Germany, EU
Corresponding author: hammer@itkp.uni-bonn.de
Received:
23
February
2009
Accepted:
26
May
2009
Three-body systems with large scattering length display universal phenomena associated with a discrete scaling symmetry. These phenomena include resonant enhancement of three-body loss rates when an Efimov three-body resonance is at the scattering threshold. In particular, there can be resonant peaks in the atom-dimer relaxation rate for large positive scattering length. We improve upon earlier studies and calculate the atom-dimer relaxation rate as a function of temperature using a Bose-Einstein distribution for the thermal average. As input, we use calculations of the atom-dimer scattering phase shifts from effective field theory.
PACS: 34.50.-s – Scattering of atoms and molecules / 21.45.-v – Few-body systems / 67.85.-d – Ultracold gases, trapped gases
© EPLA, 2009
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