Fermi polarons in two dimensions

 
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Schmidt, Richard
Enss, Tilman
Pietilä, Ville
Demler, Eugene
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https://doi.org/10.1103/PhysRevA.85.021602
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Schmidt, Richard, Tilman Enss, Ville Pietilä, and Eugene Demler. 2012. “Fermi Polarons in Two Dimensions.” Physical Review A 85 (2). https://doi.org/10.1103/physreva.85.021602.
Abstract
We theoretically analyze inverse radio-frequency (rf) spectroscopy experiments in two-component Fermi gases. We consider a small number of impurity atoms interacting strongly with a bath of majority atoms. In two-dimensional geometries we find that the main features of the rf spectrum correspond to an attractive polaron and a metastable repulsive polaron. Our results suggest that the attractive polaron has been observed in a recent experiment [B. Frohlich et al., Phys. Rev. Lett. 106, 105301 (2011)].
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http://nrs.harvard.edu/urn-3:HUL.InstRepos:41412128

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