Resonance theory of the crossover from Bardeen-Cooper-Schrieffer superfluidity to Bose-Einstein condensation in a dilute Fermi gas
Resonance theory of the crossover from Bardeen-Cooper-Schrieffer superfluidity to Bose-Einstein condensation in a dilute Fermi gas
复制标题
DOI：
10.1103/physreva.66.043604
复制
发表时间：
2002-04
影响因子：
2.9
通讯作者：
J. Milstein;S. Kokkelmans;Murray Holland
中科院分区：
文献类型：
--
作者：
J. Milstein;S. Kokkelmans;Murray Holland
我们描述了费米子超流体气体在整个磁场失谐范围内存在费什巴赫共振的情况下的行为。从共振哈密顿量开始，我们利用函数方法来描述从巴丁-库珀-施里弗到玻色-爱因斯坦凝聚型超流的连续行为。我们的结果表明，共振系统能够表现出与费米温度相当的高临界温度。结果的得出方式与基本的微观散射物理学一致。
We present a description of the behavior of a superfluid gas of fermions in the presence of a Feshbach resonance over the complete range of magnetic field detunings. Starting from a resonance Hamiltonian, we exploit a functional method to describe the continuous behavior from Bardeen-Cooper-Schrieffer to Bose-Einstein condensation type superfluidity. Our results show an ability for a resonance system to exhibit a high critical temperature comparable to the Fermi temperature. The results are derived in a manner that is shown to be consistent with the underlying microscopic scattering physics.