期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 5, 页码 908-911出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.908
关键词
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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 67.9ha(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.
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