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arXiv · 0812.3501

Dipole Oscillations of a Fermi Gas in a Disordered Trap: Damping and Localization

Luca Pezzé·Ben Hambrecht·Laurent Sanchez-Palencia
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Abstract

We theoretically study the dipole oscillations of an ideal Fermi gas in a disordered trap. We show that even weak disorder induces strong damping of the oscillations and we identify a metal-insulator crossover. For very weak disorder, we show that damping results from a dephasing effect related to weak random perturbations of the energy spectrum. For increasing disorder, we show that the Fermi gas crosses over to an insulating regime characterized by strong-damping due to the proliferation of localized states.

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Luca Pezzé, Ben Hambrecht, Laurent Sanchez-Palencia. 2008-12-18. Dipole Oscillations of a Fermi Gas in a Disordered Trap: Damping and Localization. https://doi.org/10.1209/0295-5075/88/30009

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