2011/10/31 by Dmitry Borzov, Mohammad S. Mashayekhi, Mohammad Sadegh Mashayekhi +3 · 1 citation
Physics and Astronomy · #Atomic physics #Bose gas #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Feshbach resonance #Instability #Metastability #Molecule #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Resonance (particle physics) #Resummation #Scattering #Scattering length #Strong Light-Matter Interactions #cond-mat.other #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.85.023620
published as Phys. Rev. A 85, 023620 (2012) · 8 pages, 3 figures, revised version to appear in Phys. Rev. A
arxiv created 2012/02/05 · openalex publication_date 2012/02/14 · arxiv updated 2012/02/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In this paper, we explore the nature of three-dimensional Bose gases at large positive scattering lengths via resummation of dominating processes involving a minimum number of virtual atoms. We focus on the energetics of the nearly fermionized Bose gases beyond the usual dilute limit. We also find that an onset instability sets in at a critical scattering length, beyond which the near-resonance Bose gases become strongly coupled to molecules and lose the metastability. Near the point of instability, the chemical potential reaches a maximum, and the effect of the three-body forces can be estimated to be around a few percent.