Condensate fraction of molecules for a spin mixture of ultracold fermionic atoms

Details Condensate fraction of molecules for a spin mixture of ultracold fermionic atoms Condensate fraction of molecules for a spin mixture of ultracold fermionic atoms

2004-04-23

arxiv.org/abs/cond-mat/0404565v3

Physics

Condensed Matter

Soft Condensed Matter

4 pages, RevTex, 2 figs, E-mail: xionghongwei@wipm.ac.cn A revised version according to the comments and suggestions of the re

Scientific paper

The condensate fraction of molecules for ultracold Fermi gases is investigated for the magnetic field below the Feshbach resonant magnetic field. Assuming that there is no loss of particles and energy during the adiabatic magnetic-field sweep, a simple theory is used to interpret the measured condensate fraction in the experiments by JILA group (Phys. Rev. Lett. 92, 040403 (2004)) and MIT group (Phys. Rev. Lett. 92, 120403 (2004)). Our theory shows that the condensate fraction of molecules is dependent on the initial condition of the system and especially on the process of the magnetic-field sweep.

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