Quantum simulation with ultracold fermions unveils pairing pseudogap

A research team has, for the first time, observed and quantitatively characterized the many-body pairing pseudogap in unitary Fermi gases. This achievement, pursued by the ultracold atomic community for nearly two decades, resolves longstanding debates regarding the existence of a pairing pseudogap in these gases. It also supports pairing as a possible origin of the pseudogap in high-temperature superconductors, within the framework of preformed-pair superconductivity theory.