Three body recombination of ultracold dipoles to weakly bound dimers

Details Three body recombination of ultracold dipoles to weakly bound dimers Three body recombination of ultracold dipoles to weakly bound dimers

2010-03-10

arxiv.org/abs/1003.2164v1

Physics

Atomic Physics

4 pages, 2 figures

Scientific paper

We use universality in two-body dipolar physics to study three-body recombination. We present results for the universal structure of weakly bound two-dipole states that depend only on the s-wave scattering length ($a$). We study threshold three-body recombination rates into weakly-bound dimer states as a function of the scattering length. A Fermi Golden rule analysis is used to estimate rates for different events mediated by the dipole-dipole interaction and a phenomenological contact interaction. The three-body recombination rate in the limit where $a\gg D$ contains terms which scale as $a^{4}$, $a^{2}D^{2}$ and $D^{4}$, where $D$ is the dipolar length. When $a \ll D$, the three-boby recombination rate scales as $D^4$.

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