Cold Bose gases with large scattering lengths
arXiv:cond-mat/0106628 · doi:10.1103/PhysRevLett.88.210403
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.
4 pages, 3 figures