Low energy collective excitations in a superfluid trapped Fermi gas

Details Low energy collective excitations in a superfluid trapped Fermi gas Low energy collective excitations in a superfluid trapped Fermi gas

1999-01-12

arxiv.org/abs/cond-mat/9901108v3

Phys. Rev. A 62, 041601(R) (2000)

Physics

Condensed Matter

Statistical Mechanics

5 pages, REVTeX, referencies corrected

Scientific paper

10.1103/PhysRevA.62.041601

We study low energy collective excitations in a trapped superfluid Fermi gas, that describe slow variations of the phase of the superfluid order parameter. Well below the critical temperature the corresponding eigenfrequencies turn out to be of the order of the trap frequency, and these modes manifest themselves as the eigenmodes of the density fluctuations of the gas sample. The latter could provide an experimental evidence of the presence of the superfluid phase.

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