Falco G M, Stoof H T C
Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands.
Phys Rev Lett. 2004 Apr 2;92(13):130401. doi: 10.1103/PhysRevLett.92.130401. Epub 2004 Mar 30.
We show that in an atomic Fermi gas near a Feshbach resonance the crossover between a Bose-Einstein condensate of diatomic molecules and a Bose-Einstein condensate of Cooper pairs occurs at positive detuning, i.e., when the molecular energy level lies in the two-atom continuum. We determine the crossover temperature as a function of the applied magnetic field and find excellent agreement with the experiment of C. A. Regal et al. [Phys. Rev. Lett. 92, 040403 (2004)]] who has recently observed this crossover temperature.
我们表明，在接近费什巴赫共振的原子费米气体中，双原子分子的玻色 - 爱因斯坦凝聚与库珀对的玻色 - 爱因斯坦凝聚之间的转变发生在正失谐时，即当分子能级处于双原子连续区时。我们确定了转变温度作为外加磁场的函数，并发现与C. A. 雷加尔等人 [《物理评论快报》92, 040403 (2004)] 的实验结果非常吻合，他们最近观测到了这个转变温度。
