Universal thermodynamics of strongly interacting Fermi gases

The report analyzes all the available experimental data from three laboratories on the entropy-energy relation of two different strongly interacting trapped Fermi gases, and compare this directly with a single universal theoretical prediction. A diagrammatic approach based on functional path-integrals is used together with the local density approximation to treat the inhomogeneous trap. Below the superfiuid transition, the calculations include pairing fluctuations, which are important in the strongly interacting regime, due to the onset of molecule formation.