Resonant Atom-Dimer Relaxation in Ultracold Atoms

Abstract

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.

5 pages, 2 figures, published version, minor change in results

References in corpus (7)

• Collisional stability of a three-component degenerate Fermi gas
• Three-body recombination in a three-state Fermi gas with widely tunable interactions
• Universal Properties of the Four-Body System with Large Scattering Length
• Efimov Physics in Cold Atoms
• Three-Body Recombination of Identical Bosons with a Large Positive Scattering Length at Nonzero Temperature
• Resonant Dimer Relaxation in Cold Atoms with a Large Scattering Length
• Effective Range Corrections to Three-Body Recombination for Atoms with Large Scattering Length