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arXiv · 0901.4808

Anomalous Spin segregation in a weakly interacting two-component Fermi gas

Stefan S. Natu·Erich J. Mueller
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Abstract

We explain the spin segregation seen at Duke in a two-component gas of 6Li [Du, Luo, Clancy and Thomas, Phys. Rev. Lett. 101,150401 (2008)] as a mean-field effect describable via a collisionless Boltzmann equation. As seen in experiments, we find that slight differences in the trapping potentials in the two spin states drive small spin currents. Hartree-Fock type interactions convert these currents into a redistribution of populations in energy space, and consequently a long lived spin texture develops. We explore the interaction strength dependence of these dynamics, finding close agreement with experiment.

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Stefan S. Natu, Erich J. Mueller. 2009-01-30. Anomalous Spin segregation in a weakly interacting two-component Fermi gas. https://doi.org/10.1103/physreva.79.051601

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