Collective modes of trapped gases at the BEC-BCS crossover

被引：138

作者：

Heiselberg, H ^{[1
]}

机构：

[1] Danish Def Res Estab, DK-2100 Copenhagen, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.93.040402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The collective mode frequencies in isotropic and deformed traps are calculated for general polytropic equation of states, Pproportional ton(gamma+1), and expressed in terms of gamma and the trap geometry. For molecular and standard Bose-Einstein condensates and Fermi gases near Feshbach resonances, the effective power gammasimilar or equal to0.5-1.3 is calculated from Jastrow type wave-function ansatz, and from the crossover model of Leggett. The resulting mode frequencies are calculated for these phases around the BEC-BCS crossover.

引用

页码：040402 / 1

页数：4

共 39 条

[1] Collective excitations of a degenerate Fermi vapour in a magnetic trap [J].