Trapped Two-Dimensional Fermi Gases with Population Imbalance

Details Trapped Two-Dimensional Fermi Gases with Population Imbalance Trapped Two-Dimensional Fermi Gases with Population Imbalance

2009-11-05

arxiv.org/abs/0911.0984v2

Physics

Condensed Matter

Other Condensed Matter

10 pages, 6 figures

Scientific paper

We study population imbalanced Fermi mixtures under quasi-two-dimensional confinement at zero temperature. Using mean-field theory and the local-density approximation, we study the ground state configuration throughout the BEC-BCS crossover. We find the trapped system to be either fully normal or to consist of a superfluid core surrounded by a normal shell, which is itself either fully or partially polarized. Upon changing the trap imbalance, the trap configuration may undergo continuous transitions between the different ground states. Finally, we argue that thermal equilibration throughout the trap will be considerably slowed down at low temperatures when a superfluid phase is present.

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