Phys. Rev. Lett. 98, 040401 (2007) [4 pages]

Precision Measurements of Collective Oscillations in the BEC-BCS Crossover

Abstract

References

Citing Articles (88)

Download: PDF (595 kB) Buy this article Export: BibTeX or EndNote (RIS)

A. Altmeyer¹, S. Riedl^1,2, C. Kohstall¹, M. J. Wright¹, R. Geursen¹, M. Bartenstein¹, C. Chin³, J. Hecker Denschlag¹, and R. Grimm^1,2
¹Institute of Experimental Physics and Center for Quantum Physics, University of Innsbruck, 6020 Innsbruck, Austria
²Institute for Quantum Optics and Quantum Information, Academy of Sciences, 6020 Innsbruck, Austria
³James Franck Institute, Physics Department of the University of Chicago, Chicago, Illinois 60637, USA

Received 15 September 2006; published 22 January 2007

We report on precision measurements of the frequency of the radial compression mode in a strongly interacting, optically trapped Fermi gas of ⁶Li 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.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.98.040401

DOI:

10.1103/PhysRevLett.98.040401

PACS:

03.75.Ss, 05.30.Fk, 32.80.Pj, 34.50.−s

About | Terms and Conditions | Subscriptions | Search | Help

Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.

Citation Search:

Phys. Rev. Lett. 98, 040401 (2007) [4 pages]

Precision Measurements of Collective Oscillations in the BEC-BCS Crossover