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

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.

published as EPL 88 (2009) 30009

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Cited by in corpus (8)

• Anderson localization in Bose-Einstein condensates
• Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder
• Transport regimes of cold gases in a two-dimensional anisotropic disorder
• Localized and extended states in a disordered trap
• Thermalization and localization of an oscillating Bose-Einstein condensate in a disordered trap
• Assessing Quantum Thermalization in Physical and Configuration Spaces via Many-Body Weak Values
• Slow relaxation and sensitivity to disorder in trapped lattice fermions after a quench
• Kinetic energy equipartition: a tool to characterize quantum thermalization