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Cold Bose gases with large scattering lengths

S. Cowell·H. Heiselberg·I. E. Mazets·J. Morales·V. R. Pandharipande·C. J. Pethick
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Abstract

We calculate the energy and condensate fraction for a dense system of bosons interacting through an attractive short range interaction with positive s-wave scattering length $a$. At high densities, $n>>a^{-3}$, the energy per particle, chemical potential, and square of the sound speed are independent of the scattering length and proportional to $n^{2/3}$, as in Fermi systems.

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S. Cowell, H. Heiselberg, I. E. Mazets, J. Morales, V. R. Pandharipande, C. J. Pethick. 2001-06-29. Cold Bose gases with large scattering lengths. https://doi.org/10.1103/physrevlett.88.210403

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