Evenly spread: density image of a homogeneous 2D Fermi gas Homogeneous 2D Fermi gases have long fascinated theoretical physicists, but creating a real system to study in the laboratory had eluded ...

Ultracold atomic gases have long served as a textbook paradigm of many-body physics, allowing studies of, say, Bose–Einstein condensation and superfluidity, in clean and well-controlled environments.