Strongly interacting Bose gases

Contrary to Fermi systems, the quantitative experimental study of Bose gases have been limited to the weakly interacting regime, due to a strong increase of three-body recombination near Feshbach resonances. In this talk, we will present a quantitative study of the three-body recombination rate at unitarity and show that a unitary Bose gas can be stabilized at high temperature [1]. We will demonstrate that, contrary to Arrhenius's law, the rate of molecule formation follows a $1/T^2$ law dictated by the coupling to the attractive universal Efimow channel. Finally, we will discuss the influence of losses on the thermodynamical properties of the system. \\[4pt] [1] B. Rem {\em et al.} arXiv:1212.5274.