Efimov physics in heteronuclear four-body systems

Details Efimov physics in heteronuclear four-body systems Efimov physics in heteronuclear four-body systems

2011-09-07

arxiv.org/abs/1109.1581v1

Phys. Rev. Lett. 108, 073201 (2012)

Physics

Atomic Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.108.073201

We study three- and four-body Efimov physics in a heteronuclear atomic system with three identical heavy bosonic atoms and one light atom. We show that exchange of the light atom between the heavy atoms leads to both three- and four-body features in the low-energy inelastic rate constants that trace to the Efimov effect. Further, the effective interaction generated by this exchange can provide an additional mechanism for control in ultracold experiments. Finally, we find that there is no true four-body Efimov effect - that is, no infinite number of four-body states in the absence of two- and three-body bound states - resolving a decades-long controversy.

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