Phys. Rev. Lett. 93, 040402 (2004) [4 pages]Collective Modes of Trapped Gases at the BEC-BCS Crossover
H. Heiselberg Received 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 [ Abstract | Previous article | Next article | Issue 4 ] |
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