Precision measurements of collective oscillations in the BEC-BCS crossover

被引：203

作者：

Altmeyer, A. ^{[1
]}

Riedl, S.

Kohstall, C.

Wright, M. J.

Geursen, R.

Bartenstein, M.

Chin, C.

Denschlag, J. Hecker

Grimm, R.

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[2] Univ Innsbruck, Ctr Quantum Phys, A-6020 Innsbruck, Austria

[3] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria

[4] Univ Chicago, Dept Phys, James Franck Inst, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 04期

关键词：

INTERACTING FERMI GAS; BOSE; SUPERCONDUCTIVITY; CONDENSATION;

D O I：

10.1103/PhysRevLett.98.040401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on precision measurements of the frequency of the radial compression mode in a strongly interacting, optically trapped Fermi gas of Li-6 atoms. Our results allow for a test of theoretical predictions for the equation of state in the BEC-BCS crossover. We confirm recent quantum Monte Carlo results and rule out simple mean-field BCS theory. Our results show the long-sought beyond-mean-field effects in the strongly interacting Bose-Einstein condensation (BEC) regime.

引用

页数：4

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