Spectroscopic Temperature Determination of Degenerate Fermi Gases

Details Spectroscopic Temperature Determination of Degenerate Fermi Gases Spectroscopic Temperature Determination of Degenerate Fermi Gases

2003-09-22

arxiv.org/abs/cond-mat/0309489v1

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 4 figures, Revtex4

Scientific paper

10.1103/PhysRevA.68.063409

We suggest a simple method for measuring the temperature of ultra-cold gases made of fermions. We show that by using a two-photon Raman probe, it is possible to obtain lineshapes which reveal properties of the degenerate sample, notably its temperature $T$. The proposed method could be used with identical fermions in different hyperfine states interacting via s-wave scattering or identical fermions in the same hyperfine state via p-wave scattering. We illustrate the applicability of the method in realistic conditions for $^6$Li prepared in two different hyperfine states. We find that temperatures down to 0.05 $T_{F}$ can be determined by this {\it in-situ} method.

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