Collective modes as a probe of the equation of state for partially polarized Fermi gases

Details Collective modes as a probe of the equation of state for partially polarized Fermi gases Collective modes as a probe of the equation of state for partially polarized Fermi gases

2006-07-19

arxiv.org/abs/cond-mat/0607491v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures

Scientific paper

We calculate the collective modes of a partially polarized Fermi gas trapped
in a spherically symmetric harmonic potential. We show that the breathing mode
frequency exhibits non-monotonic dependence on polarization in the entire
BCS-BEC crossover region. Moreover, we find that the breathing mode can be used
to distinguish between two commonly used unitary gas equations of state.

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