Cold Bose Gases with Large Scattering Lengths

2001/06/29 by S. Cowell, H. Heiselberg, I. E. Mazets +3 · 7 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat #nucl-th

paper · pdf · doi:10.1103/physrevlett.88.210403

published as Phys.Rev.Lett. 88 (2002) 210403 · 4 pages, 3 figures

arxiv created 2001/06/29 · openalex publication_date 2002/05/10 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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. The condensate is quenched at densities na(3) approximately 1.

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