High-polarization limit of the quasi-two-dimensional Fermi gas
arXiv:1202.6564 · doi:10.1103/PhysRevA.86.041602
Abstract
We demonstrate that the theoretical description of current experiments of quasi-2D Fermi gases requires going beyond usual 2D theories. We provide such a theory for the highly spin-imbalanced quasi-2D Fermi gas. For typical experimental conditions, we find that the location of the recently predicted polaron-molecule transition is shifted to lower values of the vacuum binding energy due to the interplay between transverse confinement and many-body physics. The energy of the attractive polaron is calculated in the 2D-3D crossover and displays a series of cusps before converging towards the 3D limit. The repulsive polaron is shown to be accurately described by a 2D theory with a single interaction parameter.
7 pages, 6 figures, published version
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Cited by in corpus (19)
- Attractive and repulsive Fermi polarons in two dimensions
- Polarons, Dressed Molecules, and Itinerant Ferromagnetism in ultracold Fermi gases
- Highly polarized Fermi gases in two dimensions
- Spin-Imbalanced Quasi-Two-Dimensional Fermi Gases
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- Microscopic theory of the Hubbard interaction in low-dimensional optical lattices