Evaporative depolarization and spin transport in a unitary trapped Fermi gas

Details Evaporative depolarization and spin transport in a unitary trapped Fermi gas Evaporative depolarization and spin transport in a unitary trapped Fermi gas

2009-03-31

arxiv.org/abs/0903.5324v2

Phys. Rev. A 80, 063605 (2009)

Physics

Condensed Matter

Quantum Gases

6 pages, 3 figures; published version

Scientific paper

10.1103/PhysRevA.80.063605

We consider a partially spin-polarized atomic Fermi gas in a high-aspect-ratio trap, with a flux of predominantly spin-up atoms exiting the center of the trap. We argue that such a scenario can be produced by evaporative cooling, and we find that it can result in a substantially non-equilibrium polarization pattern for typical experimental parameters. We offer this as a possible explanation for the quantitative discrepancies in recent experiments on spin-imbalanced unitary Fermi gases.

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