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arXiv · 0906.3753

Zero Sound in Dipolar Fermi Gases

Shai Ronen·John L. Bohn
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Abstract

We study the propagation of sound in a homogeneous dipolar gas at zero temperature, known as zero sound. We find that undamped sound propagation is possible only in a range of solid angles around the direction of polarization of the dipoles. Above a critical dipole moment, we find an unstable mode, by which the gas collapses locally perpendicular to the dipoles' direction.

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Shai Ronen, John L. Bohn. 2009-11-22. Zero Sound in Dipolar Fermi Gases. https://doi.org/10.1103/physreva.81.033601

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