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Three-boson problem near a narrow Feshbach resonance

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arxiv cond-mat/0404036 v2 pith:IDDI6JIG submitted 2004-04-02 cond-mat.stat-mech

classification cond-mat.stat-mech
keywords resonancesthree-bodyfeshbachlengthnarrownearresonancescattering
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We consider a three-boson system with resonant binary interactions and show that three-body observables depend only on the resonance width and the scattering length. The effect of narrow resonances is qualitatively different from that of wide resonances revealing novel physics of three-body collisions. We calculate the rate of three-body recombination to a weakly bound level and the atom-dimer scattering length and discuss implications for experiments on Bose-Einstein condensates and atom-molecule mixtures near Feshbach resonances.

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  1. Non-Efimovian two-neutron halos with an $s$-wave core-neutron resonance

    nucl-th 2025-07 conditional novelty 6.0 of 10

    Two-neutron halos with a near-threshold s-wave core-neutron resonance need no three-body parameter: two-body input fixes the halo, and applying the framework to carbon-22 rules out the reported 0.8 MeV resonance as to...

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