Efimov physics in heteronuclear four-body systems

Abstract

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.

5 pages, 4 figures

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• Efimov Physics: a review
• Universal few-body physics and cluster formation
• Tests of universal three-body physics in an ultracold Bose-Fermi mixture
• Universality of an impurity in a Bose-Einstein condensate
• Generalized Efimov scenario for heavy-light mixtures
• Three-body forces and Efimov physics in nuclei and atoms
• Heavy hadron molecules in effective field theory: the emergence of exotic nuclear landscapes
• Efimov effect in a $D$-dimensional Born-Oppenheimer approach
• Universal bosonic tetramers of dimer-atom-atom structure
• Zero-temperature phase diagram of Yukawa bosons
• Three and four identical fermions near the unitary limit
• Tetramer Bound States in Heteronuclear Systems
• Tetramers of two heavy and two light bosons
• Universal Bound States of Two Particles in Mixed Dimensions or Near a Mirror
• Trimer and Tetramer Bound States in Heteronuclear Systems
• Emergent four-body parameter in universal two-species bosonic systems
• Van der Waals five-body size-energy universality