Richard Schmidt, Tilman Enss, Ville Pietilä, Eugene Demler
We theoretically analyze inverse radiofrequency (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 [Phys. Rev.
Lett. 106, 105301 (2011)].
View original:
http://arxiv.org/abs/1110.1649
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