A recent rejuvenation of experimental and theoretical interest in the physics of few-body
systems has provided deep, fundamental insights into a broad range of problems. Few-body …

This review is concerned with the physics and chemistry associated with the interactions,
collisions, and reactions of ultracold molecules, that is, molecules having translational …

When an impurity is immersed in a Bose-Einstein condensate, impurity-boson interactions
are expected to dress the impurity into a quasiparticle, the Bose polaron. We superimpose …

Can a gas of spin-up and spin-down fermions become ferromagnetic because of repulsive
interactions? We addressed this question, for which there is not yet a definitive theoretical …

Ultracold atomic gases have developed into prime systems for experimental studies of
Efimov three-body physics and related few-body phenomena, which occur in the universal …

Experimental investigation of chemical reactions with full quantum state resolution for all
reactants and products has been a long-term challenge. Here we prepare an ultracold few …

We provide a general discussion on the importance of three-body Efimov physics for
strongly interacting ultracold quantum gases. Using the adiabatic hyperspherical …

Efimov physics is a universal phenomenon in quantum three-body systems. For systems
with resonant two-body interactions, Efimov predicted an infinite series of three-body bound …

Using a Feshbach resonance, we create ultracold fermionic molecules starting from a Bose-
Fermi atom gas mixture. The resulting mixture of atoms and weakly bound molecules …

We study three-body recombination of Ba++ Rb+ Rb in the mK regime where a single Ba
138+ ion in a Paul trap is immersed into a cloud of ultracold Rb 87 atoms. We measure the …