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Low-temperature crossover in the momentum distribution of cold atomic gases in one dimension

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 Added by Vadim V. Cheianov
 Publication date 2004
  fields Physics
and research's language is English




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The momentum distribution function for the two-component 1D gases of bosons and fermions is studied in the limit of strong interatomic repulsion. A pronounced reconstruction of the distribution is found at a temperature much smaller than the Fermi temperature. This new temperature scale, which equals the Fermi temperature divided by the dimensionless coupling strength, is a feature of the two-component model and does not exist in the one-component case. We estimate the parameters relevant for the experimental observation of the crossover effect.



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