Bogoliubov theory of Feshbach molecules in the BEC-BCS crossover

被引：10

作者：

Romans, M. W. J. ^{[1
]}

Stoof, H. T. C. ^{[1
]}

机构：

[1] Univ Utrecht, Inst Theoret Phys, NL-3584 CE Utrecht, Netherlands

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.74.053618

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the Bogoliubov theory for the Bose-Einstein condensation of Feshbach molecules in a balanced Fermi mixture. Because the Bogoliubov theory includes (Gaussian) fluctuations, we can in this manner accurately incorporate both the two-body and many-body aspects of the BEC-BCS crossover that occurs near a Feshbach resonance. We apply the theory in particular to the very broad Feshbach resonance in atomic Li-6 at a magnetic field of B-0=834 G and find good agreement with experiments in that case. The BEC-BCS crossover for more narrow Feshbach resonances is also discussed.

引用

页数：15

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