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29 March 2024
 
  » arxiv » cond-mat/0606624

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Asymmetric two-component Fermi gas with unequal masses
M. Iskin ; C. A. R. Sa de Melo ;
Date 24 Jun 2006
Subject Superconductivity; Other
AbstractWe analyze the zero temperature phase diagram for an asymmetric two-component Fermi gas as a function of mass anisotropy and population imbalance. We identify regions corresponding to normal, and uniform or non-uniform superfluid phases, and find a topological quantum phase transition in the Bardeen-Cooper-Schrieffer (BCS), unitarity and Bose-Einstein condensation (BEC) limits. Lastly, we derive the zero temperature low frequency and long wavelength collective excitation spectrum, and recover the Bogoliubov relation for weakly interacting dilute bosons in the BEC limit.
Source arXiv, cond-mat/0606624
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