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 …

Physics is living an era of unprecedented cross-fertilization among the different areas of
science. In this perspective review, we discuss the manifold impact that state-of-the-art cold …

The Josephson effect is a macroscopic quantum phenomenon that reveals the broken
symmetry associated with any superfluid state. Here we report on the observation of the …

Spontaneous symmetry breaking is a central paradigm of elementary particle physics,
magnetism, superfluidity and superconductivity. According to Goldstone's theorem, phase …

We report on precision measurements of the frequency of the radial compression mode in a
strongly interacting, optically trapped Fermi gas of Li 6 atoms. Our results allow for a test of …

Using a two-channel model, we show that the number of closed-channel molecules in a two-
component Fermi gas close to a Feshbach resonance is directly related to the derivative of …

Abstract The Kibble–Zurek mechanism describes the spontaneous formation of topological
defects in a system crossing a continuous phase transition,. Its central premise is the notion …

Sound waves are excited in an optically trapped degenerate Fermi gas of spin-up and spin-
down atoms with magnetically tunable interactions. Measurements are made throughout the …

We map out the critical velocity in the crossover from Bose-Einstein condensation to
Bardeen-Cooper-Schrieffer superfluidity with ultracold Li 6 gases. A small attractive potential …

We investigate the Bose-Einstein condensation of fermionic pairs in a uniform two-
component Fermi gas, obtaining an explicit formula for the condensate density as a function …