Phys. Rev. A 85, 021602(R) (2012) - Fermi polarons in two dimensions

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Fermi polarons in two dimensions

Richard Schmidt, Tilman Enss, Ville Pietilä, and Eugene Demler

Phys. Rev. A 85, 021602(R) – Published 7 February 2012

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. Fröhlich et al., Phys. Rev. Lett. 106, 105301 (2011)].

Received 18 October 2011

DOI:https://doi.org/10.1103/PhysRevA.85.021602

©2012 American Physical Society

Authors & Affiliations

Richard Schmidt and Tilman Enss

Physik Department, Technische Universität München, D-85747 Garching, Germany

Ville Pietilä and Eugene Demler

Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA

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Vol. 85, Iss. 2 — February 2012

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