In this review, we discuss the properties of a few impurity atoms immersed in a gas of
ultracold fermions—the so-called Fermi polaron problem. On one hand, this many-body …

This paper reviews recent experimental and theoretical progress concerning many-body
phenomena in dilute, ultracold gases. It focuses on effects beyond standard weak-coupling …

This paper presents a review of the current state of the art in the research field of cold and
ultracold molecules. It serves as an introduction to the focus issue ofNew Journal of Physics …

The physics of quantum degenerate atomic Fermi gases in uniform as well as in
harmonically trapped configurations is reviewed from a theoretical perspective. Emphasis is …

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 …

Magnetically tunable Feshbach resonances were employed to associate cold diatomic
molecules in a series of experiments involving both atomic Bose and two-spin-component …

The realization of superfluidity in a dilute gas of fermionic atoms, analogous to
superconductivity in metals, represents a long-standing goal of ultracold gas research. In …

We report Bose-Einstein condensation of weakly bound L i 2 6 molecules in a crossed
optical trap near a Feshbach resonance. We measure a molecule-molecule scattering …

We discuss the behavior of weakly bound bosonic dimers formed in a two-component cold
Fermi gas at a large positive scattering length a for the interspecies interaction. We find the …

Rydberg atoms have an electron in a state with a very high principal quantum number, and
as a result can exhibit unusually long-range interactions. One example is the bonding of two …