Enhanced Dimer Relaxation in an Atomic/Molecular BEC

Details Enhanced Dimer Relaxation in an Atomic/Molecular BEC Enhanced Dimer Relaxation in an Atomic/Molecular BEC

2003-03-13

arxiv.org/abs/cond-mat/0303249v2

Phys.Rev. A70 (2004) 042706

Physics

Condensed Matter

Other Condensed Matter

5 pages, revtex4, 2 PS figures, title changed, final version

Scientific paper

10.1103/PhysRevA.70.042706

We derive a universal formula for the rate constant \beta for relaxation of a shallow dimer into deeply-bound diatomic molecules in the case of atoms with a large scattering length a. We show that \beta is determined by a and by two 3-body parameters that also determine the binding energies and widths of Efimov states. The rate constant \beta scales like \hbar a/m near the resonance, but the coefficient is a periodic function of ln(a) that may have resonant enhancement at values of a that differ by multiples of 22.7.

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