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

Theja N. De Silva·Erich J. Mueller
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Abstract

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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Theja N. De Silva, Erich J. Mueller. 2006-07-19. Collective modes as a probe of the equation of state for partially polarized Fermi gases. https://arxiv.org/abs/cond-mat/0607491

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