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

Vadim V. Cheianov·H. Smith·M. B. Zvonarev
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Abstract

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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Vadim V. Cheianov, H. Smith, M. B. Zvonarev. 2004-08-08. Low-temperature crossover in the momentum distribution of cold atomic gases in one dimension. https://doi.org/10.1103/physreva.71.033610

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