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

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

2004-08-08

arxiv.org/abs/cond-mat/0408169v1

Physics

Condensed Matter

Other Condensed Matter

6 pages, 2 figures

Scientific paper

10.1103/PhysRevA.71.033610

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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