Collective excitations of strongly interacting Fermi gases of atoms in a harmonic trap

Authors

Y. E. Kim
A. L. Zubarev

Published in:

Physical Review A 72,1 (2005) 011603(R);

Link to original published article:

http://dx.doi.org/10.1103/PhysRevA.72.011603

Abstract

The zero-temperature properties of a dilute two-component Fermi gas in the BCS to Bose-Einstein Condensation crossover are investigated. On the basis of a generalization of the Hylleraas-Undheim method, we construct rigorous upper bounds to the collective frequencies for the radial and the axial breathing mode of the Fermi gas under harmonic confinement in the framework of the hydrodynamic theory. The bounds are compared to experimental data for trapped vapors of Li-6 atoms.

Keywords

bose-einstein condensation;; many-body problem;; molecules

Date of this Version

January 2005