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

Feshbach resonances are the essential tool to control the interaction between atoms in
ultracold quantum gases. They have found numerous experimental applications, opening up …

We have observed condensation of fermionic atom pairs in the BCS-BEC crossover regime.
A trapped gas of fermionic K 40 atoms is evaporatively cooled to quantum degeneracy and …

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 have observed Bose-Einstein condensation of pairs of fermionic atoms in an ultracold Li
6 gas at magnetic fields above a Feshbach resonance, where no stable Li 2 6 molecules …

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

We have observed Bose-Einstein condensation of molecules. When a spin mixture of
fermionic L i 6 atoms was evaporatively cooled in an optical dipole trap near a Feshbach …

We demonstrate a reversible conversion of a Li 2 6 molecular Bose-Einstein condensate to
a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance. By …

We review the BCS to Bose–Einstein condensation (BEC) crossover scenario which is
based on the well known crossover generalization of the BCS ground state wavefunction …

This report addresses topics and questions of common interest in the fields of ultra-cold
gases and nuclear physics in the context of the BCS–BEC crossover. By this crossover, the …