Phys. Rev. A 74, 053626 (2006) - Breakdown of the local density approximation in interacting systems of cold fermions in strongly anisotropic traps

Breakdown of the local density approximation in interacting systems of cold fermions in strongly anisotropic traps

Adilet Imambekov, C. J. Bolech, Mikhail Lukin, and Eugene Demler

Phys. Rev. A 74, 053626 – Published 29 November 2006

Abstract

We consider spin-polarized mixtures of cold fermionic atoms on the BEC side of the Feshbach resonance. We demonstrate that a strongly anisotropic confining potential can give rise to a double-peak structure in the axial distribution of the density difference and a polarization-dependent aspect ratio of the minority species. Both phenomena appear as a result of the breakdown of the local density approximation for the phase-separated regime. We speculate on the implications of our findings for the unitary regime.

Received 18 April 2006

DOI:https://doi.org/10.1103/PhysRevA.74.053626

©2006 American Physical Society

Authors & Affiliations

Adilet Imambekov¹, C. J. Bolech^1,2, Mikhail Lukin¹, and Eugene Demler¹

¹Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
²Department of Physics, Rice University, Houston, Texas 77005, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 74, Iss. 5 — November 2006

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Sign up to receive regular email alerts from Physical Review A