Volume 86, Number 5, June 2009
|Number of page(s)||5|
|Section||Atomic, Molecular and Optical Physics|
|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: firstname.lastname@example.org
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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