BCS-BEC crossover with unequal-mass fermions
BCS-BEC crossover with unequal-mass fermions
We investigate the crossover from BCS pairing to molecular Bose-Einstein condensation (BEC) in an atomic gas with two fermion species with masses ${m}_{\ensuremath{\uparrow}}\ensuremath{\ne}{m}_{\ensuremath{\downarrow}}$ tuned through a Feshbach resonance. We present results for the $T=0$ equation of state as a function of the scattering length including the effects of Gaussian fluctuations …