Heat capacity of a two-component superfluid Fermi gas

We investigate mean-field effects in two-component trapped Fermi gases in the superfluid phase, in the vicinity of s-wave Feshbach resonances. Within the resonance superfluidity approach (Holland et al 2001 Phys. Rev. Lett. 87 120406) we calculate the ground state energy and the heat capacity as functions of temperature. Heat capacity is analysed for different trap aspect ratios. We find that trap anisotropy is an important factor in determining both the value of heat capacity near the transition temperature and the transition temperature itself.