This article reviews theoretical and experimental advances in Efimov physics, an array of
quantum few-body and many-body phenomena arising for particles interacting via short …

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 …

The problem of an impurity particle moving through a bosonic medium plays a fundamental
role in physics. However, the canonical scenario of a mobile impurity immersed in a Bose …

A powerful set of universal relations, centered on a quantity called the contact, connects the
strength of short-range two-body correlations to the thermodynamics of a many-body system …

We observe two consecutive heteronuclear Efimov resonances in an ultracold Li-Cs mixture
by measuring three-body loss coefficients as a function of magnetic field near a Feshbach …

We investigate the zero-temperature properties of an impurity particle interacting with a Bose-
Einstein condensate (BEC), using a variational wave function that includes up to two …

In few-body physics, Efimov states are an infinite series of three-body bound states that obey
universal discrete scaling symmetry when pairwise interactions are resonantly enhanced …

Understanding and controlling collisions is crucial to the burgeoning field of ultracold
molecules. All experiments so far have observed fast loss of molecules from the trap …

We report the observation of a three-body recombination resonance in an ultracold gas of
cesium atoms at a very large negative value of the s-wave scattering length. The resonance …

In recent years extensive theoretical and experimental studies of universal few-body physics
have advanced our understanding of universal Efimov physics. Whereas theory had been …