Abstract
An effective field theory for the three-body system with large scattering length is applied to three-body recombination to a weakly bound -wave state in a Bose gas. Our model independent analysis demonstrates that the three-body recombination constant is not universal, but can take any value between zero and , where is the scattering length. Other low-energy three-body observables can be predicted in terms of and . Near a Feshbach resonance, should oscillate between those limits as the magnetic field approaches the point where . In any interval of over which increases by a factor of 22.7, should have a zero.
- Received 24 February 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.908
©2000 American Physical Society