Three-body recombination in Bose gases with large scattering length
Abstract
An effective field theory for the three-body system with large scattering length is applied to three-body recombination to a weakly-bound s-wave state in a Bose gas. Our model independent analysis demonstrates that the three-body recombination constant alpha is not universal, but can take any value between zero and 67.9 \hbar a^4/m, where a is the scattering length. Other low-energy three-body observables can be predicted in terms of a and alpha. Near a Feshbach resonance, alpha should oscillate between those limits as the magnetic field B approaches the point where a -> infinity. In any interval of B over which a increases by a factor of 22.7, alpha should have a zero.
Keywords
Cite
@article{arxiv.cond-mat/0002365,
title = {Three-body recombination in Bose gases with large scattering length},
author = {P. F. Bedaque and E. Braaten and H. -W. Hammer},
journal= {arXiv preprint arXiv:cond-mat/0002365},
year = {2009}
}
Comments
8 pages, RevTex, 3 postscript figures, uses epsf.sty, rotate.sty, references added, discussion improved