Phys. Rev. Lett. 93, 040402 (2004) [4 pages]Collective Modes of Trapped Gases at the BEC-BCS CrossoverReceived 2 March 2004; published 23 July 2004 The collective mode frequencies in isotropic and deformed traps are calculated for general polytropic equation of states, P∝nγ+1, and expressed in terms of γ and the trap geometry. For molecular and standard Bose-Einstein condensates and Fermi gases near Feshbach resonances, the effective power γ≃0.5–1.3 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.040402
DOI:
10.1103/PhysRevLett.93.040402
PACS:
05.30.Fk, 05.30.Jp, 05.70.Ce, 47.37.+q
|
|
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.